Cloud Fleet Routing service is under specific service terms. See Service specific terms.

ShipmentModel

A shipment model contains a set of shipments which must be performed by a set of vehicles, while minimizing the overall cost, which is the sum of:

the cost of routing the vehicles (sum of cost per total time, cost per travel time, and fixed cost over all vehicles).
the unperformed shipment penalties.
the cost of the global duration of the shipments

JSON representation

JSON representation
{ "shipments": [ { object (`Shipment`) } ], "vehicles": [ { object (`Vehicle`) } ], "globalStartTime": string, "globalEndTime": string, "globalDurationCostPerHour": number, "durationDistanceMatrices": [ { object (`DurationDistanceMatrix`) } ], "durationDistanceMatrixSrcTags": [ string ], "durationDistanceMatrixDstTags": [ string ], "transitionAttributes": [ { object (`TransitionAttributes`) } ], "breakRules": [ { object (`BreakRule`) } ], "shipmentTypeIncompatibilities": [ { object (`ShipmentTypeIncompatibility`) } ], "shipmentTypeRequirements": [ { object (`ShipmentTypeRequirement`) } ], "precedenceRules": [ { object (`PrecedenceRule`) } ], "maxActiveVehicles": integer }

{
  "shipments": [
    {
      object (Shipment)
    }
  ],
  "vehicles": [
    {
      object (Vehicle)
    }
  ],
  "globalStartTime": string,
  "globalEndTime": string,
  "globalDurationCostPerHour": number,
  "durationDistanceMatrices": [
    {
      object (DurationDistanceMatrix)
    }
  ],
  "durationDistanceMatrixSrcTags": [
    string
  ],
  "durationDistanceMatrixDstTags": [
    string
  ],
  "transitionAttributes": [
    {
      object (TransitionAttributes)
    }
  ],
  "breakRules": [
    {
      object (BreakRule)
    }
  ],
  "shipmentTypeIncompatibilities": [
    {
      object (ShipmentTypeIncompatibility)
    }
  ],
  "shipmentTypeRequirements": [
    {
      object (ShipmentTypeRequirement)
    }
  ],
  "precedenceRules": [
    {
      object (PrecedenceRule)
    }
  ],
  "maxActiveVehicles": integer
}

Fields
`shipments[]`	`object (Shipment)` Set of shipments which must be performed in the model.
`vehicles[]`	`object (Vehicle)` Set of vehicles which can be used to perform visits.
`globalStartTime`	`string (Timestamp format)` Global start and end time of the model: no times outside of this range can be considered valid. The model's time span must be less than a year, i.e. the `globalEndTime` and the `globalStartTime` must be within 31536000 seconds of each other. When using `cost_per_*hour` fields, you might want to set this window to a smaller interval to increase performance (eg. if you model a single day, you should set the global time limits to that day). If unset, 00:00:00 UTC, January 1, 1970 (i.e. seconds: 0, nanos: 0) is used as default. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`globalEndTime`	`string (Timestamp format)` If unset, 00:00:00 UTC, January 1, 1971 (i.e. seconds: 31536000, nanos: 0) is used as default. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`globalDurationCostPerHour`	`number` The "global duration" of the overall plan is the difference between the earliest effective start time and the latest effective end time of all vehicles. Users can assign a cost per hour to that quantity to try and optimize for earliest job completion, for example. This cost must be in the same unit as `Shipment.penalty_cost`.
`durationDistanceMatrices[]`	`object (DurationDistanceMatrix)` Specifies duration and distance matrices used in the model. If this field is empty, Google Maps or geodesic distances will be used instead, depending on the value of the `useGeodesicDistances` field. If it is not empty, `useGeodesicDistances` cannot be true and neither `durationDistanceMatrixSrcTags` nor `durationDistanceMatrixDstTags` can be empty. Usage examples: There are two locations: locA and locB. 1 vehicle starting its route at locA and ending it at locA. 1 pickup visit request at locB. model { vehicles { startTags: "locA" endTags: "locA" } shipments { pickups { tags: "locB" } } durationDistanceMatrixSrcTags: "locA" durationDistanceMatrixSrcTags: "locB" durationDistanceMatrixDstTags: "locA" durationDistanceMatrixDstTags: "locB" durationDistanceMatrices { rows { # from: locA durations { seconds: 0 } meters: 0 # to: locA durations { seconds: 100 } meters: 1000 # to: locB } rows { # from: locB durations { seconds: 102 } meters: 990 # to: locA durations { seconds: 0 } meters: 0 # to: locB } } } There are three locations: locA, locB and locC. 1 vehicle starting its route at locA and ending it at locB, using matrix "fast". 1 vehicle starting its route at locB and ending it at locB, using matrix "slow". 1 vehicle starting its route at locB and ending it at locB, using matrix "fast". 1 pickup visit request at locC. model { vehicles { startTags: "locA" endTags: "locB" startTags: "fast" } vehicles { startTags: "locB" endTags: "locB" startTags: "slow" } vehicles { startTags: "locB" endTags: "locB" startTags: "fast" } shipments { pickups { tags: "locC" } } durationDistanceMatrixSrcTags: "locA" durationDistanceMatrixSrcTags: "locB" durationDistanceMatrixSrcTags: "locC" durationDistanceMatrixDstTags: "locB" durationDistanceMatrixDstTags: "locC" durationDistanceMatrices { vehicleStartTag: "fast" rows { # from: locA durations { seconds: 1000 } meters: 2000 # to: locB durations { seconds: 600 } meters: 1000 # to: locC } rows { # from: locB durations { seconds: 0 } meters: 0 # to: locB durations { seconds: 700 } meters: 1200 # to: locC } rows { # from: locC durations { seconds: 702 } meters: 1190 # to: locB durations { seconds: 0 } meters: 0 # to: locC } } durationDistanceMatrices { vehicleStartTag: "slow" rows { # from: locA durations { seconds: 1800 } meters: 2001 # to: locB durations { seconds: 900 } meters: 1002 # to: locC } rows { # from: locB durations { seconds: 0 } meters: 0 # to: locB durations { seconds: 1000 } meters: 1202 # to: locC } rows { # from: locC durations { seconds: 1001 } meters: 1195 # to: locB durations { seconds: 0 } meters: 0 # to: locC } } }
`durationDistanceMatrixSrcTags[]`	`string` Tags defining the sources of the duration and distance matrices; `durationDistanceMatrices(i).rows(j)` defines durations and distances from visits with tag `durationDistanceMatrixSrcTags(j)` to other visits in matrix i. Tags correspond to `VisitRequest.tags` or `Vehicle.start_tags`. A given `VisitRequest` or `Vehicle` must match exactly one tag in this field. Note that a `Vehicle`'s source, destination and matrix tags may be the same; similarly a `VisitRequest`'s source and destination tags may be the same. All tags must be different and cannot be empty strings. If this field is not empty, then `durationDistanceMatrices` must not be empty.
`durationDistanceMatrixDstTags[]`	`string` Tags defining the destinations of the duration and distance matrices; `durationDistanceMatrices(i).rows(j).durations(k)` (resp. `durationDistanceMatrices(i).rows(j).meters(k))` defines the duration (resp. the distance) of the travel from visits with tag `durationDistanceMatrixSrcTags(j)` to visits with tag `durationDistanceMatrixDstTags(k)` in matrix i. Tags correspond to `VisitRequest.tags` or `Vehicle.start_tags`. A given `VisitRequest` or `Vehicle` must match exactly one tag in this field. Note that a `Vehicle`'s source, destination and matrix tags may be the same; similarly a `VisitRequest`'s source and destination tags may be the same. All tags must be different and cannot be empty strings. If this field is not empty, then `durationDistanceMatrices` must not be empty.
`transitionAttributes[]`	`object (TransitionAttributes)` Transition attributes added to the model.
`breakRules[]`	`object (BreakRule)` Set of break rules used in the model. Each vehicle specifies the `BreakRule` that applies to it via the `Vehicle.break_rule_indices` field (which must be a singleton).
`shipmentTypeIncompatibilities[]`	`object (ShipmentTypeIncompatibility)` Sets of incompatible shipment_types (see `ShipmentTypeIncompatibility`).
`shipmentTypeRequirements[]`	`object (ShipmentTypeRequirement)` Sets of `shipmentType` requirements (see `ShipmentTypeRequirement`).
`precedenceRules[]`	`object (PrecedenceRule)` Set of precedence rules which must be enforced in the model.
`maxActiveVehicles`	`integer` Constrains the maximum number of active vehicles. A vehicle is active if its route performs at least one shipment. This can be used to limit the number of routes in the case where there are fewer drivers than vehicles and that the fleet of vehicles is heterogeneous. The optimization will then select the best subset of vehicles to use. Must be strictly positive.

Shipment

The shipment of a single item, from one of its pickups to one of its deliveries. For the shipment to be considered as performed, a unique vehicle must visit one of its pickup locations (and decrease its spare capacities accordingly), then visit one of its delivery locations later on (and therefore re-increase its spare capacities accordingly).

JSON representation

JSON representation
{ "pickups": [ { object (`VisitRequest`) } ], "deliveries": [ { object (`VisitRequest`) } ], "demands": [ { object (`CapacityQuantity`) } ], "allowedVehicleIndices": [ integer ], "costsPerVehicle": [ number ], "costsPerVehicleIndices": [ integer ], "pickupToDeliveryAbsoluteDetourLimit": string, "pickupToDeliveryTimeLimit": string, "shipmentType": string, "label": string, "ignore": boolean, "penaltyCost": number, "pickupToDeliveryRelativeDetourLimit": number }

{
  "pickups": [
    {
      object (VisitRequest)
    }
  ],
  "deliveries": [
    {
      object (VisitRequest)
    }
  ],
  "demands": [
    {
      object (CapacityQuantity)
    }
  ],
  "allowedVehicleIndices": [
    integer
  ],
  "costsPerVehicle": [
    number
  ],
  "costsPerVehicleIndices": [
    integer
  ],
  "pickupToDeliveryAbsoluteDetourLimit": string,
  "pickupToDeliveryTimeLimit": string,
  "shipmentType": string,
  "label": string,
  "ignore": boolean,
  "penaltyCost": number,
  "pickupToDeliveryRelativeDetourLimit": number
}

Fields
`pickups[]`	`object (VisitRequest)` Set of pickup alternatives associated to the shipment. If not specified, the vehicle only needs to visit a location corresponding to the deliveries.
`deliveries[]`	`object (VisitRequest)` Set of delivery alternatives associated to the shipment. If not specified, the vehicle only needs to visit a location corresponding to the pickups.
`demands[]`	`object (CapacityQuantity)` Demand of the shipment, broken up in several `CapacityQuantity` messages, one for each quantity type. The corresponding quantities will be subtracted from the vehicle capacity after performing a pickup or added to the capacity after a delivery (see `Vehicle.capacities`). In particular, this means that the `CapacityQuantity` used in different shipments and in the vehicle capacities must all be compatible. If a demand is not specified for a given type it will be considered as null. `CapacityQuantity` types in this field must be unique.
`allowedVehicleIndices[]`	`integer` The set of vehicles that may perform this shipment. If empty, all vehicles may perform it. Vehicles are given by their index in the `ShipmentModel`'s `vehicles` list.
`costsPerVehicle[]`	`number` Specifies the cost that is incurred when this shipment is delivered by each vehicle. If specified, it must have EITHER: the same number of elements as `costsPerVehicleIndices`. `costsPerVehicle[i]` corresponds to vehicle `costsPerVehicleIndices[i]` of the model. the same number of elements as there are vehicles in the model. The i-th element corresponds to vehicle #i of the model. These costs must be in the same unit as `penaltyCost` and must not be negative. Leave this field empty, if there are no such costs.
`costsPerVehicleIndices[]`	`integer` Indices of the vehicles to which `costsPerVehicle` applies. If non-empty, it must have the same number of elements as `costsPerVehicle`. A vehicle index may not be specified more than once. If a vehicle is excluded from `costsPerVehicleIndices`, its cost is zero.
`pickupToDeliveryAbsoluteDetourLimit`	`string (Duration format)` Specifies the maximum absolute detour time compared to the shortest path from pickup to delivery. If specified, it must be nonnegative, and the shipment must contain at least a pickup and a delivery. For example, let t be the shortest time taken to go from the selected pickup alternative directly to the selected delivery alternative. Then setting `pickupToDeliveryAbsoluteDetourLimit` enforces: `startTime(delivery) - startTime(pickup) <= t + pickupToDeliveryAbsoluteDetourLimit` If both relative and absolute limits are specified on the same shipment, the more constraining limit is used for each possible pickup/delivery pair. As of 10/2017, detours are only supported when travel durations do not depend on vehicles. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`pickupToDeliveryTimeLimit`	`string (Duration format)` Specifies the maximum duration from start of pickup to start of delivery of a shipment. If specified, it must be nonnegative, and the shipment must contain at least a pickup and a delivery. This does not depend on which alternatives are selected for pickup and delivery, nor on vehicle speed. This can be specified alongside maximum detour constraints: the solution will respect both specifications. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`shipmentType`	`string` Non-empty string specifying a "type" for this shipment. This feature can be used to define incompatibilities or requirements between `shipment_types` (see `shipmentTypeIncompatibilities` and `shipmentTypeRequirements` in `ShipmentModel`). Differs from `visitTypes` which is specified for a single visit: All pickup/deliveries belonging to the same shipment share the same `shipmentType`.
`label`	`string` Specifies a label for this shipment. This label is reported in the response in the `shipmentLabel` of the corresponding `ShipmentRoute.Visit`.
`ignore`	`boolean` If true, skip this shipment, but don't apply a `penaltyCost`. Ignoring a shipment results in a validation error when there are any `shipmentTypeRequirements` in the model. Ignoring a shipment that is performed in `injectedFirstSolutionRoutes` or `injectedSolutionConstraint` is permitted; the solver removes the related pickup/delivery visits from the performing route. `precedenceRules` that reference ignored shipments will also be ignored.
`penaltyCost`	`number` If the shipment is not completed, this penalty is added to the overall cost of the routes. A shipment is considered completed if one of its pickup and delivery alternatives is visited. The cost may be expressed in the same unit used for all other cost-related fields in the model and must be positive. IMPORTANT: If this penalty is not specified, it is considered infinite, i.e. the shipment must be completed.
`pickupToDeliveryRelativeDetourLimit`	`number` Specifies the maximum relative detour time compared to the shortest path from pickup to delivery. If specified, it must be nonnegative, and the shipment must contain at least a pickup and a delivery. For example, let t be the shortest time taken to go from the selected pickup alternative directly to the selected delivery alternative. Then setting `pickupToDeliveryRelativeDetourLimit` enforces: `startTime(delivery) - startTime(pickup) <= std::ceil(t * (1.0 + pickupToDeliveryRelativeDetourLimit))` If both relative and absolute limits are specified on the same shipment, the more constraining limit is used for each possible pickup/delivery pair. As of 10/2017, detours are only supported when travel durations do not depend on vehicles.

VisitRequest

Request for a visit which can be done by a vehicle: it has a geo-location (or two, see below), opening and closing times represented by time windows, and a service duration time (time spent by the vehicle once it has arrived to pickup or drop off goods).

JSON representation

JSON representation
{ "arrivalLocation": { object (`LatLng`) }, "departureLocation": { object (`LatLng`) }, "tags": [ string ], "timeWindows": [ { object (`TimeWindow`) } ], "duration": string, "cost": number, "demands": [ { object (`CapacityQuantity`) } ], "visitTypes": [ string ], "label": string }

{
  "arrivalLocation": {
    object (LatLng)
  },
  "departureLocation": {
    object (LatLng)
  },
  "tags": [
    string
  ],
  "timeWindows": [
    {
      object (TimeWindow)
    }
  ],
  "duration": string,
  "cost": number,
  "demands": [
    {
      object (CapacityQuantity)
    }
  ],
  "visitTypes": [
    string
  ],
  "label": string
}

Fields
`arrivalLocation`	`object (LatLng)` The geo-location where the vehicle arrives when performing this `VisitRequest`. If the shipment model has duration distance matrices, `arrivalLocation` must not be specified.
`departureLocation`	`object (LatLng)` The geo-location where the vehicle departs after completing this `VisitRequest`. Can be omitted if it is the same as `arrivalLocation`. If the shipment model has duration distance matrices, `departureLocation` must not be specified.
`tags[]`	`string` Specifies tags attached to the visit request. Empty or duplicate strings are not allowed.
`timeWindows[]`	`object (TimeWindow)` Time windows which constrain the arrival time at a visit. Note that a vehicle may depart outside of the arrival time window, i.e. arrival time + duration do not need to be inside a time window. This can result in waiting time if the vehicle arrives before `TimeWindow.start_time`. The absence of `TimeWindow` means that the vehicle can perform this visit at any time. Time windows must be disjoint, i.e. no time window must overlap with or be adjacent to another, and they must be in increasing order. `costPerHourAfterSoftEndTime` and `softEndTime` can only be set if there is a single time window.
`duration`	`string (Duration format)` Duration of the visit, i.e. time spent by the vehicle between arrival and departure (to be added to the possible waiting time; see `timeWindows`). A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`cost`	`number` Cost to service this visit request on a vehicle route. This can be used to pay different costs for each alternative pickup or delivery of a shipment. This cost must be in the same unit as `Shipment.penalty_cost` and must not be negative.
`demands[]`	`object (CapacityQuantity)` Demand of the visit request which may be broken up into several `CapacityQuantity` fields, one for each quantity type. The corresponding quantities will be subtracted from the vehicle capacity if the visit request is a pickup or added to the capacity if it is a delivery (see `Vehicle.capacities`). In particular, this means that the `CapacityQuantity` used in different visit requests and in the vehicle capacities must all be compatible. If a demand is not specified for a given type, it will be considered as null. `CapacityQuantity` types in the repeated field must be unique. The demand is added to the one specified in the shipment to which the visit request belongs (see `Shipment.demands`).
`visitTypes[]`	`string` Specifies the types of the visit. This may be used to allocate additional time required for a vehicle to complete this visit (see `Vehicle.extra_visit_duration_for_visit_type`). A type can only appear once.
`label`	`string` Specifies a label for this `VisitRequest`. This label is reported in the response as `visitLabel` in the corresponding `ShipmentRoute.Visit`.

TimeWindow

Time windows constrain the time of an event, such as the arrival time at a visit, or the start and end time of a vehicle.

Hard time window bounds, startTime and endTime, enforce the earliest and latest time of the event, such that startTime <= event_time <= endTime. The soft time window lower bound, softStartTime, expresses a preference for the event to happen at or after softStartTime by incurring a cost proportional to how long before softStartTime the event occurs. The soft time window upper bound, softEndTime, expresses a preference for the event to happen at or before softEndTime by incurring a cost proportional to how long after softEndTime the event occurs. startTime, endTime, softStartTime and softEndTime should be within the global time limits (see ShipmentModel.global_start_time and ShipmentModel.global_end_time) and should respect:

  0 <= `startTime` <= `softStartTime` <= `endTime` and
  0 <= `startTime` <= `softEndTime` <= `endTime`.

JSON representation
{ "startTime": string, "endTime": string, "softStartTime": string, "softEndTime": string, "costPerHourBeforeSoftStartTime": number, "costPerHourAfterSoftEndTime": number }

Fields
`startTime`	`string (Timestamp format)` The hard time window start time. If unspecified it will be set to `ShipmentModel.global_start_time`. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`endTime`	`string (Timestamp format)` The hard time window end time. If unspecified it will be set to `ShipmentModel.global_end_time`. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`softStartTime`	`string (Timestamp format)` The soft start time of the time window. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`softEndTime`	`string (Timestamp format)` The soft end time of the time window. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`costPerHourBeforeSoftStartTime`	`number` A cost per hour added to other costs in the model if the event occurs before softStartTime, computed as: `max(0, softStartTime - t.seconds) * costPerHourBeforeSoftStartTime / 3600, t being the time of the event.` This cost must be positive, and the field can only be set if softStartTime has been set.
`costPerHourAfterSoftEndTime`	`number` A cost per hour added to other costs in the model if the event occurs after `softEndTime`, computed as: `max(0, t.seconds - softEndTime.seconds) * costPerHourAfterSoftEndTime / 3600, t being the time of the event.` This cost must be positive, and the field can only be set if `softEndTime` has been set.

Vehicle

Models a vehicle in a shipment problem. Solving a shipment problem will build a route starting from startLocation and ending at endLocation for this vehicle. A route is a sequence of visits (see ShipmentRoute).

JSON representation

JSON representation
{ "travelMode": enum (`TravelMode`), "startLocation": { object (`LatLng`) }, "endLocation": { object (`LatLng`) }, "startTags": [ string ], "endTags": [ string ], "startTimeWindows": [ { object (`TimeWindow`) } ], "endTimeWindows": [ { object (`TimeWindow`) } ], "unloadingPolicy": enum (`UnloadingPolicy`), "capacities": [ { object (`CapacityQuantity`) } ], "startLoadIntervals": [ { object (`CapacityQuantityInterval`) } ], "endLoadIntervals": [ { object (`CapacityQuantityInterval`) } ], "costPerHour": number, "costPerTraveledHour": number, "costPerKilometer": number, "fixedCost": number, "usedIfRouteIsEmpty": boolean, "routeDurationLimit": { object (`DurationLimit`) }, "travelDurationLimit": { object (`DurationLimit`) }, "routeDistanceLimit": { object (`DistanceLimit`) }, "extraVisitDurationForVisitType": { string: string, ... }, "breakRuleIndices": [ integer ], "label": string, "ignore": boolean, "travelDurationMultiple": number }

{
  "travelMode": enum (TravelMode),
  "startLocation": {
    object (LatLng)
  },
  "endLocation": {
    object (LatLng)
  },
  "startTags": [
    string
  ],
  "endTags": [
    string
  ],
  "startTimeWindows": [
    {
      object (TimeWindow)
    }
  ],
  "endTimeWindows": [
    {
      object (TimeWindow)
    }
  ],
  "unloadingPolicy": enum (UnloadingPolicy),
  "capacities": [
    {
      object (CapacityQuantity)
    }
  ],
  "startLoadIntervals": [
    {
      object (CapacityQuantityInterval)
    }
  ],
  "endLoadIntervals": [
    {
      object (CapacityQuantityInterval)
    }
  ],
  "costPerHour": number,
  "costPerTraveledHour": number,
  "costPerKilometer": number,
  "fixedCost": number,
  "usedIfRouteIsEmpty": boolean,
  "routeDurationLimit": {
    object (DurationLimit)
  },
  "travelDurationLimit": {
    object (DurationLimit)
  },
  "routeDistanceLimit": {
    object (DistanceLimit)
  },
  "extraVisitDurationForVisitType": {
    string: string,
    ...
  },
  "breakRuleIndices": [
    integer
  ],
  "label": string,
  "ignore": boolean,
  "travelDurationMultiple": number
}

Fields
`travelMode`	`enum (TravelMode)` The travel mode which affects the roads usable by the vehicle and its speed. See also `travelDurationMultiple`.
`startLocation`	`object (LatLng)` Geographic location where the vehicle starts before picking up any shipments. If not specified, the vehicle starts at its first pickup. If the shipment model has duration and distance matrices, `startLocation` must not be specified.
`endLocation`	`object (LatLng)` Geographic location where the vehicle ends after it has completed its last `VisitRequest`. If not specified the vehicle's `ShipmentRoute` ends immediately when it completes its last `VisitRequest`. If the shipment model has duration and distance matrices, `endLocation` must not be specified.
`startTags[]`	`string` Specifies tags attached to the start of the vehicle's route. Empty or duplicate strings are not allowed.
`endTags[]`	`string` Specifies tags attached to the end of the vehicle's route. Empty or duplicate strings are not allowed.
`startTimeWindows[]`	`object (TimeWindow)` Time windows during which the vehicle may depart its start location. They must be within the global time limits (see `ShipmentModel.global_*` fields). If unspecified, there is no limitation besides those global time limits. Time windows belonging to the same repeated field must be disjoint, i.e. no time window can overlap with or be adjacent to another, and they must be in chronological order. `costPerHourAfterSoftEndTime` and `softEndTime` can only be set if there is a single time window.
`endTimeWindows[]`	`object (TimeWindow)` Time windows during which the vehicle may arrive at its end location. They must be within the global time limits (see `ShipmentModel.global_*` fields). If unspecified, there is no limitation besides those global time limits. Time windows belonging to the same repeated field must be disjoint, i.e. no time window can overlap with or be adjacent to another, and they must be in chronological order. `costPerHourAfterSoftEndTime` and `softEndTime` can only be set if there is a single time window.
`unloadingPolicy`	`enum (UnloadingPolicy)` Unloading policy enforced on the vehicle.
`capacities[]`	`object (CapacityQuantity)` Capacities of the vehicle according to different quantity types (weight, volume, # of pallets for instance). They must be compatible with the `Shipment.demands` and `VisitRequest.demands` fields. Undefined capacities are infinite. `CapacityQuantity` types in this field must be unique.
`startLoadIntervals[]`	`object (CapacityQuantityInterval)` The allowed intervals of load (i.e. consumed capacity) of different quantity types with which the vehicle must start its route. They must be compatible with the `Shipment.demands`, `VisitRequest.demands`, and `Vehicle.capacities` fields. Types must be unique.
`endLoadIntervals[]`	`object (CapacityQuantityInterval)` The allowed intervals of load (i.e. consumed capacity) of different quantity types with which the vehicle must end its route. They must be compatible with the `Shipment.demands`, `VisitRequest.demands`, and `Vehicle.capacities` fields. Types must be unique.
`costPerHour`	`number` Vehicle costs: all costs add up and must be in the same unit as `Shipment.penalty_cost`. Cost per hour of the vehicle route. This cost is applied to the total time taken by the route, and includes travel time, waiting time, and visit time. Using `costPerHour` instead of just `costPerTraveledHour` may result in additional latency.
`costPerTraveledHour`	`number` Cost per traveled hour of the vehicle route. This cost is applied only to travel time taken by the route (i.e., that reported in `ShipmentRoute.transitions`), and excludes waiting time and visit time.
`costPerKilometer`	`number` Cost per kilometer of the vehicle route. This cost is applied to the distance reported in the `ShipmentRoute.transitions` and does not apply to any distance implicitly traveled from the `arrivalLocation` to the `departureLocation` of a single `VisitRequest`.
`fixedCost`	`number` Fixed cost applied if this vehicle is used to handle a shipment.
`usedIfRouteIsEmpty`	`boolean` This field only applies to vehicles when their route does not serve any shipments. It indicates if the vehicle should be considered as used or not in this case. If true, the vehicle goes from its start to its end location even if it doesn't serve any shipments, and time and distance costs resulting from its start --> end travel are taken into account. Otherwise, it doesn't travel from its start to its end location, and no `breakRule` or delay (from `TransitionAttributes`) are scheduled for this vehicle. In this case, the vehicle's `ShipmentRoute` doesn't contain any information except for the vehicle index and label.
`routeDurationLimit`	`object (DurationLimit)` Limit applied to the total duration of the vehicle's route. In a given `OptimizeToursResponse`, the route duration of a vehicle is the difference between its `vehicleEndTime` and `vehicleStartTime`.
`travelDurationLimit`	`object (DurationLimit)` Limit applied to the travel duration of the vehicle's route. In a given `OptimizeToursResponse`, the route travel duration is the sum of all its `transitions.travel_duration`.
`routeDistanceLimit`	`object (DistanceLimit)` Limit applied to the total distance of the vehicle's route. In a given `OptimizeToursResponse`, the route distance is the sum of all its `transitions.travel_distance_meters`.
`extraVisitDurationForVisitType`	`map (key: string, value: string (Duration format))` Specifies a map from visitTypes strings to durations. The duration is time in addition to `VisitRequest.duration` to be taken at visits with the specified `visitTypes`. This extra visit duration adds cost if `costPerHour` is specified. Keys (i.e. `visitTypes`) cannot be empty strings. If a visit request has multiple types, a duration will be added for each type in the map.
`breakRuleIndices[]`	`integer` Indices in the `breakRule` field in the source `ShipmentModel`. They correspond to break rules enforced on the vehicle. As of 2018/03, at most one rule index per vehicle can be specified.
`label`	`string` Specifies a label for this vehicle. This label is reported in the response as the `vehicleLabel` of the corresponding `ShipmentRoute`.
`ignore`	`boolean` If true, `usedIfRouteIsEmpty` must be false, and this vehicle will remain unused. If a shipment is performed by an ignored vehicle in `injectedFirstSolutionRoutes`, it is skipped in the first solution but is free to be performed in the response. If a shipment is performed by an ignored vehicle in `injectedSolutionConstraint` and any related pickup/delivery is constrained to remain on the vehicle (i.e., not relaxed to level `RELAX_ALL_AFTER_THRESHOLD`), it is skipped in the response. If a shipment has a non-empty `allowedVehicleIndices` field and all of the allowed vehicles are ignored, it is skipped in the response.
`travelDurationMultiple`	`number` Specifies a multiplicative factor that can be used to increase or decrease travel times of this vehicle. For example, setting this to 2.0 means that this vehicle is slower and has travel times that are twice what they are for standard vehicles. This multiple does not affect visit durations. It does affect cost if `costPerHour` or `costPerTraveledHour` are specified. This must be in the range [0.001, 1000.0]. If unset, the vehicle is standard, and this multiple is considered 1.0. WARNING: Travel times will be rounded to the nearest second after this multiple is applied but before performing any numerical operations, thus, a small multiple may result in a loss of precision. See also `extraVisitDurationForVisitType` below.

TravelMode

Travel modes which can be used by vehicles.

These should be a subset of the Google Maps Platform Routes Preferred API travel modes, see: https://developers.google.com/maps/documentation/routes_preferred/reference/rest/Shared.Types/RouteTravelMode.

Enums
`TRAVEL_MODE_UNSPECIFIED`	Unspecified travel mode, equivalent to `DRIVING`.
`DRIVING`	Travel mode corresponding to driving directions (car, ...).
`WALKING`	Travel mode corresponding to walking directions.
`BICYCLING`	Travel mode corresponding to bicycling directions.

UnloadingPolicy

Policy on how a vehicle can be unloaded. Applies only to shipments having both a pickup and a delivery.

Other shipments are free to occur anywhere on the route independent of unloadingPolicy.

Enums
`UNLOADING_POLICY_UNSPECIFIED`	Unspecified unloading policy; deliveries must just occur after their corresponding pickups.
`LAST_IN_FIRST_OUT`	Deliveries must occur in reverse order of pickups
`FIRST_IN_FIRST_OUT`	Deliveries must occur in the same order as pickups

CapacityQuantityInterval

An interval of values a capacity quantity can have. See CapacityQuantity above.

JSON representation
{ "type": string, "minValue": string, "maxValue": string }

Fields

Fields
`type`	`string` A unique identifier of the type of this quantity.
`minValue`	`string (int64 format)` The minimum value the capacity quantity can have. It must be nonnegative. If left unspecified, the minimum quantity is unrestricted by this bound, but may be restricted by other constraints. At least one of `minValue` and `maxValue` must be set.
`maxValue`	`string (int64 format)` The maximum value the capacity quantity can have. It must be nonnegative. If left unspecified, the maximum quantity is unrestricted by this bound, but may be restricted by other constraints. At least one of `minValue` and `maxValue` must be set.

type

string

A unique identifier of the type of this quantity.

minValue

string (int64 format)

The minimum value the capacity quantity can have. It must be nonnegative. If left unspecified, the minimum quantity is unrestricted by this bound, but may be restricted by other constraints.

At least one of minValue and maxValue must be set.

maxValue

string (int64 format)

The maximum value the capacity quantity can have. It must be nonnegative. If left unspecified, the maximum quantity is unrestricted by this bound, but may be restricted by other constraints.

At least one of minValue and maxValue must be set.

DurationLimit

A limit defining a maximum duration of the route of a vehicle. It can be either hard or soft.

When a soft limit field is defined, both the soft max threshold and its associated cost must be defined together.

JSON representation
{ "maxDuration": string, "softMaxDuration": string, "quadraticSoftMaxDuration": string, "costPerHourAfterSoftMax": number, "costPerSquareHourAfterQuadraticSoftMax": number }

Fields
`maxDuration`	`string (Duration format)` A hard limit constraining the duration to be at most maxDuration. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`softMaxDuration`	`string (Duration format)` A soft limit not enforcing a maximum duration limit, but when violated makes the route incur a cost. This cost adds up to other costs defined in the model, with the same unit. If defined, `softMaxDuration` must be nonnegative. If maxDuration is also defined, `softMaxDuration` must be less than maxDuration. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`quadraticSoftMaxDuration`	`string (Duration format)` A soft limit not enforcing a maximum duration limit, but when violated makes the route incur a cost, quadratic in the duration. This cost adds up to other costs defined in the model, with the same unit. If defined, `quadraticSoftMaxDuration` must be nonnegative. If `maxDuration` is also defined, `quadraticSoftMaxDuration` must be less than `maxDuration`, and the difference must be no larger than one day: `maxDuration - quadraticSoftMaxDuration <= 86400 seconds` A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`costPerHourAfterSoftMax`	`number` Cost per hour incurred if the `softMaxDuration` threshold is violated. The additional cost is 0 if the duration is under the threshold, otherwise the cost depends on the duration as follows: `costPerHourAfterSoftMax * (duration - softMaxDuration)` The cost must be nonnegative.
`costPerSquareHourAfterQuadraticSoftMax`	`number` Cost per square hour incurred if the `quadraticSoftMaxDuration` threshold is violated. The additional cost is 0 if the duration is under the threshold, otherwise the cost depends on the duration as follows: `costPerSquareHourAfterQuadraticSoftMax * (duration - quadraticSoftMaxDuration)^2` The cost must be nonnegative.

DistanceLimit

A limit defining a maximum distance which can be traveled. It can be either hard or soft.

If a soft limit is defined, both softMaxMeters and costPerKilometerAboveSoftMax must be defined and be nonnegative.

JSON representation
{ "maxMeters": string, "softMaxMeters": string, "costPerKilometerAboveSoftMax": number }

Fields

Fields
`maxMeters`	`string (int64 format)` A hard limit constraining the distance to be at most maxMeters. The limit must be nonnegative.
`softMaxMeters`	`string (int64 format)` A soft limit not enforcing a maximum distance limit, but when violated results in a cost which adds up to other costs defined in the model, with the same unit. If defined softMaxMeters must be less than maxMeters and must be nonnegative.
`costPerKilometerAboveSoftMax`	`number` Cost per kilometer incurred if `softMaxMeters` limit is violated. The additional cost is 0 if the distance is under the limit, otherwise the formula used to compute the cost is the following: `(distanceMeters - softMaxMeters) / 1000.0 * costPerKilometerAboveSoftMax.` The cost must be nonnegative.

maxMeters

string (int64 format)

A hard limit constraining the distance to be at most maxMeters. The limit must be nonnegative.

softMaxMeters

string (int64 format)

A soft limit not enforcing a maximum distance limit, but when violated results in a cost which adds up to other costs defined in the model, with the same unit.

If defined softMaxMeters must be less than maxMeters and must be nonnegative.

costPerKilometerAboveSoftMax

number

Cost per kilometer incurred if softMaxMeters limit is violated. The additional cost is 0 if the distance is under the limit, otherwise the formula used to compute the cost is the following:

  (distanceMeters - softMaxMeters) / 1000.0 *
  costPerKilometerAboveSoftMax.

The cost must be nonnegative.

DurationDistanceMatrix

Specifies a duration and distance matrix from visit and vehicle start locations to visit and vehicle end locations.

JSON representation
{ "rows": [ { object (`Row`) } ], "vehicleStartTag": string }

Fields

Fields
`rows[]`	`object (Row)` Specifies the rows of the duration and distance matrix. It must have as many elements as `ShipmentModel.duration_distance_matrix_src_tags`.
`vehicleStartTag`	`string` Tag defining to which vehicles this duration and distance matrix applies. If empty, this applies to all vehicles, and there can only be a single matrix. Each vehicle start must match exactly one matrix, i.e. exactly one of their `startTags` field must match the `vehicleStartTag` of a matrix (and of that matrix only). All matrices must have a different `vehicleStartTag`.

rows[]

object (Row)

Specifies the rows of the duration and distance matrix. It must have as many elements as ShipmentModel.duration_distance_matrix_src_tags.

vehicleStartTag

string

Tag defining to which vehicles this duration and distance matrix applies. If empty, this applies to all vehicles, and there can only be a single matrix.

Each vehicle start must match exactly one matrix, i.e. exactly one of their startTags field must match the vehicleStartTag of a matrix (and of that matrix only).

All matrices must have a different vehicleStartTag.

Row

Specifies a row of the duration and distance matrix.

JSON representation
{ "durations": [ string ], "meters": [ number ] }

Fields

Fields
`durations[]`	`string (Duration format)` Duration values for a given row. It must have as many elements as `ShipmentModel.duration_distance_matrix_dst_tags`. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`meters[]`	`number` Distance values for a given row. If no costs or constraints refer to distances in the model, this can be left empty; otherwise it must have as many elements as `durations`.

durations[]

string (Duration format)

Duration values for a given row. It must have as many elements as ShipmentModel.duration_distance_matrix_dst_tags.

A duration in seconds with up to nine fractional digits, terminated by 's'. Example: "3.5s".

meters[]

number

Distance values for a given row. If no costs or constraints refer to distances in the model, this can be left empty; otherwise it must have as many elements as durations.

TransitionAttributes

Specifies attributes of transitions between two consecutive visits on a route. Several TransitionAttributes may apply to the same transition: in that case, all extra costs add up and the strictest constraint or limit applies (following natural "AND" semantics).

JSON representation
{ "srcTag": string, "excludedSrcTag": string, "dstTag": string, "excludedDstTag": string, "cost": number, "costPerKilometer": number, "distanceLimit": { object (`DistanceLimit`) }, "delay": string }

Fields
`srcTag`	`string` Tags defining the set of (src->dst) transitions these attributes apply to. A source visit or vehicle start matches iff its `VisitRequest.tags` or `Vehicle.start_tags` either contains `srcTag` or does not contain `excludedSrcTag` (depending on which of these two fields is non-empty).
`excludedSrcTag`	`string` See `srcTag`. Exactly one of `srcTag` and `excludedSrcTag` must be non-empty.
`dstTag`	`string` A destination visit or vehicle end matches iff its `VisitRequest.tags` or `Vehicle.end_tags` either contains `dstTag` or does not contain `excludedDstTag` (depending on which of these two fields is non-empty).
`excludedDstTag`	`string` See `dstTag`. Exactly one of `dstTag` and `excludedDstTag` must be non-empty.
`cost`	`number` Specifies a cost for performing this transition. This is in the same unit as all other costs in the model and must not be negative. It is applied on top of all other existing costs.
`costPerKilometer`	`number` Specifies a cost per kilometer applied to the distance traveled while performing this transition. It adds up to any `Vehicle.cost_per_kilometer` specified on vehicles.
`distanceLimit`	`object (DistanceLimit)` Specifies a limit on the distance traveled while performing this transition. As of 06/2021, only soft limits are supported.
`delay`	`string (Duration format)` Specifies a delay incurred when performing this transition. This delay always occurs after finishing the source visit and before starting the destination visit. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.

BreakRule

Rules to generate time breaks for a vehicle (e.g. lunch breaks). A break is a contiguous period of time during which the vehicle remains idle at its current position and cannot perform any visit. A break may occur:

during the travel between two visits (which includes the time right before or right after a visit, but not in the middle of a visit), in which case it extends the corresponding transit time between the visits,
or before the vehicle start (the vehicle may not start in the middle of a break), in which case it does not affect the vehicle start time.
or after the vehicle end (ditto, with the vehicle end time).

JSON representation
{ "breakRequests": [ { object (`BreakRequest`) } ], "frequencyConstraints": [ { object (`FrequencyConstraint`) } ] }

Fields

Fields
`breakRequests[]`	`object (BreakRequest)` Sequence of breaks. See the `BreakRequest` message.
`frequencyConstraints[]`	`object (FrequencyConstraint)` Several `FrequencyConstraint` may apply. They must all be satisfied by the `BreakRequest`s of this `BreakRule`. See `FrequencyConstraint`.

breakRequests[]

object (BreakRequest)

Sequence of breaks. See the BreakRequest message.

frequencyConstraints[]

object (FrequencyConstraint)

Several FrequencyConstraint may apply. They must all be satisfied by the BreakRequests of this BreakRule. See FrequencyConstraint.

BreakRequest

The sequence of breaks (i.e. their number and order) that apply to each vehicle must be known beforehand. The repeated BreakRequests define that sequence, in the order in which they must occur. Their time windows (earliestStartTime / latestStartTime) may overlap, but they must be compatible with the order (this is checked).

JSON representation
{ "earliestStartTime": string, "latestStartTime": string, "minDuration": string }

Fields

Fields
`earliestStartTime`	`string (Timestamp format)` Required. Lower bound (inclusive) on the start of the break. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`latestStartTime`	`string (Timestamp format)` Required. Upper bound (inclusive) on the start of the break. A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: `"2014-10-02T15:01:23Z"` and `"2014-10-02T15:01:23.045123456Z"`.
`minDuration`	`string (Duration format)` Required. Minimum duration of the break. Must be positive. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.

earliestStartTime

string (Timestamp format)

Required. Lower bound (inclusive) on the start of the break.

A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: "2014-10-02T15:01:23Z" and "2014-10-02T15:01:23.045123456Z".

latestStartTime

string (Timestamp format)

Required. Upper bound (inclusive) on the start of the break.

A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: "2014-10-02T15:01:23Z" and "2014-10-02T15:01:23.045123456Z".

minDuration

string (Duration format)

Required. Minimum duration of the break. Must be positive.

A duration in seconds with up to nine fractional digits, terminated by 's'. Example: "3.5s".

FrequencyConstraint

One may further constrain the frequency and duration of the breaks specified above, by enforcing a minimum break frequency, such as "There must be a break of at least 1 hour every 12 hours". Assuming that this can be interpreted as "Within any sliding time window of 12h, there must be at least one break of at least one hour", that example would translate to the following FrequencyConstraint:

{
   minBreakDuration { seconds: 3600 }         # 1 hour.
   maxInterBreakDuration { seconds: 39600 }  # 11 hours (12 - 1 = 11).
}

The timing and duration of the breaks in the solution will respect all such constraints, in addition to the time windows and minimum durations already specified in the BreakRequest.

A FrequencyConstraint may in practice apply to non-consecutive breaks. For example, the following schedule honors the "1h every 12h" example:

  04:00 vehicle start
   .. performing travel and visits ..
  09:00 1 hour break
  10:00 end of the break
   .. performing travel and visits ..
  12:00 20-min lunch break
  12:20 end of the break
   .. performing travel and visits ..
  21:00 1 hour break
  22:00 end of the break
   .. performing travel and visits ..
  23:59 vehicle end

JSON representation
{ "minBreakDuration": string, "maxInterBreakDuration": string }

Fields

Fields
`minBreakDuration`	`string (Duration format)` Required. Minimum break duration for this constraint. Nonnegative. See description of `FrequencyConstraint`. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`maxInterBreakDuration`	`string (Duration format)` Required. Maximum allowed span of any interval of time in the route that does not include at least partially a break of `duration >= minBreakDuration`. Must be positive. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.

minBreakDuration

string (Duration format)

Required. Minimum break duration for this constraint. Nonnegative. See description of FrequencyConstraint.

A duration in seconds with up to nine fractional digits, terminated by 's'. Example: "3.5s".

maxInterBreakDuration

string (Duration format)

Required. Maximum allowed span of any interval of time in the route that does not include at least partially a break of duration >= minBreakDuration. Must be positive.

A duration in seconds with up to nine fractional digits, terminated by 's'. Example: "3.5s".

ShipmentTypeIncompatibility

Specifies incompatibilties between shipments depending on their shipmentType. The appearance of incompatible shipments on the same route is restricted based on the incompatibility mode.

JSON representation
{ "types": [ string ], "incompatibilityMode": enum (`IncompatibilityMode`) }

Fields

Fields
`types[]`	`string` List of incompatible types. Two shipments having different `shipment_types` among those listed are "incompatible".
`incompatibilityMode`	`enum (IncompatibilityMode)` Mode applied to the incompatibility.

types[]

string

List of incompatible types. Two shipments having different shipment_types among those listed are "incompatible".

incompatibilityMode

enum (IncompatibilityMode)

Mode applied to the incompatibility.

IncompatibilityMode

Modes defining how the appearance of incompatible shipments are restricted on the same route.

Enums

INCOMPATIBILITY_MODE_UNSPECIFIED Unspecified incompatibility mode. This value should never be used.

NOT_PERFORMED_BY_SAME_VEHICLE In this mode, two shipments with incompatible types can never share the same vehicle.

Enums
`INCOMPATIBILITY_MODE_UNSPECIFIED`	Unspecified incompatibility mode. This value should never be used.
`NOT_PERFORMED_BY_SAME_VEHICLE`	In this mode, two shipments with incompatible types can never share the same vehicle.
`NOT_IN_SAME_VEHICLE_SIMULTANEOUSLY`	For two shipments with incompatible types with the `NOT_IN_SAME_VEHICLE_SIMULTANEOUSLY` incompatibility mode: If both are pickups only (no deliveries) or deliveries only (no pickups), they cannot share the same vehicle at all. If one of the shipments has a delivery and the other a pickup, the two shipments can share the same vehicle iff the former shipment is delivered before the latter is picked up.

NOT_IN_SAME_VEHICLE_SIMULTANEOUSLY

For two shipments with incompatible types with the NOT_IN_SAME_VEHICLE_SIMULTANEOUSLY incompatibility mode:

If both are pickups only (no deliveries) or deliveries only (no pickups), they cannot share the same vehicle at all.
If one of the shipments has a delivery and the other a pickup, the two shipments can share the same vehicle iff the former shipment is delivered before the latter is picked up.

ShipmentTypeRequirement

Specifies requirements between shipments based on their shipmentType. The specifics of the requirement are defined by the requirement mode.

JSON representation
{ "requiredShipmentTypeAlternatives": [ string ], "dependentShipmentTypes": [ string ], "requirementMode": enum (`RequirementMode`) }

Fields

Fields
`requiredShipmentTypeAlternatives[]`	`string` List of alternative shipment types required by the `dependentShipmentTypes`.
`dependentShipmentTypes[]`	`string` All shipments with a type in the `dependentShipmentTypes` field require at least one shipment of type `requiredShipmentTypeAlternatives` to be visited on the same route. NOTE: Chains of requirements such that a `shipmentType` depends on itself are not allowed.
`requirementMode`	`enum (RequirementMode)` Mode applied to the requirement.

requiredShipmentTypeAlternatives[]

string

List of alternative shipment types required by the dependentShipmentTypes.

dependentShipmentTypes[]

string

All shipments with a type in the dependentShipmentTypes field require at least one shipment of type requiredShipmentTypeAlternatives to be visited on the same route.

NOTE: Chains of requirements such that a shipmentType depends on itself are not allowed.

requirementMode

enum (RequirementMode)

Mode applied to the requirement.

RequirementMode

Modes defining the appearance of dependent shipments on a route.

Enums
`REQUIREMENT_MODE_UNSPECIFIED`	Unspecified requirement mode. This value should never be used.
`PERFORMED_BY_SAME_VEHICLE`	In this mode, all "dependent" shipments must share the same vehicle as at least one of their "required" shipments.
`IN_SAME_VEHICLE_AT_PICKUP_TIME`	With the IN_SAME_VEHICLE_AT_PICKUP_TIME mode, all "dependent" shipments need to have at least one "required" shipment on their vehicle at the time of their pickup. A "dependent" shipment pickup must therefore have either: A delivery-only "required" shipment delivered on the route after, or A "required" shipment picked up on the route before it, and if the "required" shipment has a delivery, this delivery must be performed after the "dependent" shipment's pickup.
`IN_SAME_VEHICLE_AT_DELIVERY_TIME`	Same as before, except the "dependent" shipments need to have a "required" shipment on their vehicle at the time of their delivery.

PrecedenceRule

A precedence rule between two events (each event is the pickup or the delivery of a shipment): the "second" event has to start at least offsetDuration after "first" has started.

Several precedences can refer to the same (or related) events, e.g., "pickup of B happens after delivery of A" and "pickup of C happens after pickup of B".

Furthermore, precedences only apply when both shipments are performed and are otherwise ignored.

JSON representation
{ "firstIsDelivery": boolean, "secondIsDelivery": boolean, "offsetDuration": string, "firstIndex": integer, "secondIndex": integer }

Fields
`firstIsDelivery`	`boolean` Indicates if the "first" event is a delivery.
`secondIsDelivery`	`boolean` Indicates if the "second" event is a delivery.
`offsetDuration`	`string (Duration format)` The offset between the "first" and "second" event. It can be negative. A duration in seconds with up to nine fractional digits, terminated by '`s`'. Example: `"3.5s"`.
`firstIndex`	`integer` Shipment index of the "first" event. This field must be specified.
`secondIndex`	`integer` Shipment index of the "second" event. This field must be specified.