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Mobility Data Specification: Car Share

MDS Modes - Car Share

Car Share refers to shared point-to-point and station-based mutli-passenger vehicles. Car Share typically has a driver who is the customer, and possibly one or more passengers or cargo.

See the modes overview for how the mode specific information below applies across MDS.

Table of Contents

Mode Attributes

Mode ID

The short name identifier for Car Share used across MDS is car-share.

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Trip Properties

Journey ID

The journey_id field shall have a consistent value in overlapping trips for a single reservation period, e.g. trips taken by a customer between ignition states over the duration of their reservation. A reservation is the duration the customer has continuous exclusive access to the vehicle whether parked or in motion. Journeys may be point-to-point or multi-segment.

Example 1: customer makes a reservation and company delivers vehicle to customer, then one trip point-to-point by customer, ending reservation at destination

<-                 Journey                ->
<-  Trip: reservation -><-  Trip: private ->

Example 2: Customer reservation for multiple days with trips for errands, gas, entertainment, etc

<-                                           Journey                                         ->
<- Trip: private -><- Trip: private -><- Trip: private -><- Trip: private -><- Trip: private ->

Example 3: one trip point-to-point with an employee moving the vehicle to a new location for maintenance

<-    Journey  ->
<- Trip: empty ->

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Journey Attributes

The journey_attributes array may have the following key value pairs:

  • reservation_id (UUID, optional): unique identifier for an entire car share reservation, tied across multiple journeys and therefore trips.

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Trip ID Requirements

Events require a valid trip_id in events where event_types contains reservation_start, reservation_stop, trip_start, trip_stop, trip_end, passenger_cancellation, provider_cancellation.

Additionally, trip_id is required if event_types contains a enter_jurisdiction or leave_jurisdiction event pertaining to a trip.

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Trip Type

The trip_type field must have one of the following enumerated values:

  • private: a private trip made by one paying customer with one or more guests
  • reservation: en route to pickup a customer who has made a reservation, with no passengers in the vehicle
  • empty: vehicle movement with no customer (outside of other trip_type values) that may need to be reported, e.g. for maintenance

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Trip Attributes

The trip_attributes array may have the following key value pairs:

  • hail_type (enumerated, required): phone_dispatch, phone, text, app
  • app_name (text, optional): name of the app used to reserve the trip which could be provider's app or 3rd party app
  • permit_licence_number (string, optional) - The permit licence number of the organization that dispatched the vehicle
  • driver_id (string, optional): Universal identifier of a specific driver, static across operators, like a driver's license number, for company employees in reservation or empty trip types, not private trips. Could also be used as a lookup in an agency's internal driver system.

See more available trip attributes for any mode in the trips endpoint.

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Fare Attributes

The fare_attributes array may have the following key value pairs:

  • payment_type (enumerated, required): cash, credit_card, mobile, voucher, no payment, test
  • fare_type (enumerated, required): meter_fare, upfront_pricing, flat_rate. Indicator of which rate was charged.
  • tolls (currency, optional) - Sum of any and all tolls charged for the trip, such as bridge tolls
  • base_rate (currency, optional) - Minimum fare to be charged as soon as the trip starts.
  • exit_fee (currency, optional) - Fee to exit location, like an airport
  • other_fees (currency, optional) - amount of any fees charged to the customer. Includes baggage fees, cleaning fee. Excludes other fees returned.
  • tip (currency, optional) - amount of tip paid by customer
  • extra_amount (currency, optional) - miscellaneous extra amounts charged to customer not covered by other fields.
  • taxes (currency, optional) - amount of taxes paid for the ride
  • surcharge (currency, optional) - any surcharge pricing

See more available fare attributes for any mode in the trips endpoint.

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Vehicle Properties

Vehicle Attributes

The vehicle_attributes array may have the following key value pairs:

  • year (integer, required)
  • make (string, required)
  • model (string, required)
  • color (string, required)
  • vin (string, required) - the Vehicle Identification Number of the vehicle
  • license_plate (string, required) - the registered external license plate number of the vehicle
  • inspection_date (date YYYY-MM-DD, optional) - the date of the last inspection of the vehicle
  • snow_shovel (boolean, optional) - shovel for removing snow or ice from around vehicle or vehicle path
  • snow_brush (boolean, optional) - brushes for removing snow or ice from vehicle
  • bike_rack (boolean, optional) - car roof or trunk mounted bike rack
  • park_access (boolean, optional) - access pass to a national/regional/municipal park system
  • toll_transponder (boolean, optional) - toll transponder for national/regional toll system
  • phone_charger (boolean, optional) - a place to charge your phone
  • sunshade (boolean, optional) - sunshade avaialable (i.e. for windshield)

See more available vehicle attributes for any mode in the vehicles endpoint.

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Accessibility Options

This accessibility_options enum represents the accessibility options available on a given vehicle, or the accessibility options utilized for a given trip.

accessibility_options Description
wheelchair_accessible This vehicle is wheelchair accessible

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State Machine

Vehicle States

Valid car share vehicle states are

  • removed
  • available
  • non_operational
  • reserved
  • on_trip
  • stopped
  • elsewhere
  • unknown

See Vehicle States for descriptions.

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Event Types

Valid car share vehicle event types are

  • charging_start
  • charging_end
  • comms_lost
  • comms_restored
  • driver_cancellation
  • decommission
  • fueling_start
  • fueling_end
  • maintenance_end
  • maintenance_start
  • passenger_cancellation
  • provider_cancellation
  • recommission
  • remote_start
  • remote_end
  • reservation_cancel
  • reservation_start
  • service_end
  • service_start
  • trip_cancel
  • trip_end
  • trip_enter_jurisdiction
  • trip_leave_jurisdiction
  • trip_resume
  • trip_start
  • trip_stop
  • unspecified

See vehicle Event Types for descriptions.

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Vehicle States Events

This is the list of vehicle_state and event_type pairings that constitute the valid transitions of the vehicle state machine.

Previous vehicle_state vehicle_state trip_state event_type Description
available elsewhere N/A leave_jurisdiction The vehicle has left jurisdictional boundaries while available for-hire
available non_operational N/A service_end The vehicle has went out of service (is unavailable for-hire)
available reserved reserved reserve The vehicle was reserved by a passenger
available unknown N/A comms_lost The vehicle has went out of comms while available for-use
elsewhere available N/A enter_jurisdiction The vehicle has entered jurisdictional boundaries while available for-hire
elsewhere non_operational N/A enter_jurisdiction The vehicle has entered jurisdictional boundaries while not operating commercially
elsewhere on_trip on_trip enter_jurisdiction The vehicle has entered jurisdictional boundaries while on a trip
elsewhere reserved N/A enter_jurisdiction The vehicle has entered jurisdictional boundaries while reserved by a customer
elsewhere unknown N/A comms_lost The vehicle has went out of comms while outside of jurisdictional boundaries
non_operational available N/A service_start The vehicle has went into service (is available for-hire)
non_operational elsewhere N/A leave_jurisdiction The vehicle has left jurisdictional boundaries while not operating commercially
non_operational removed N/A decommissioned The vehicle has been removed from the Provider's fleet
non_operational removed N/A maintenance_start The vehicle has entered the depot for maintenance
non_operational unknown N/A comms_lost The vehicle has went out of comms while not operating commercially
on_trip elsewhere N/A leave_jurisdiction The vehicle has left jurisdictional boundaries while on a trip
on_trip stopped stopped trip_stop The vehicle has stopped while on a trip
on_trip unknown N/A comms_lost The vehicle has gone out of comms while on a trip
removed non_operational N/A maintenance_end The vehicle has left the depot
removed non_operational N/A recommissioned The vehicle has been re-added to the Provider's fleet after being previously decommissioned
removed unknown N/A comms_lost The vehicle has gone out of comms while removed
reserved available N/A driver_cancellation The driver has canceled the reservation
reserved available N/A passenger_cancellation The passenger has canceled the reservation
reserved available N/A provider_cancellation The provider has canceled the reservation
reserved elsewhere N/A leave_jurisdiction The vehicle has left the jurisdiction while in a reservation
reserved stopped stopped reserve_stop The vehicle has stopped to pick up the passenger
reserved unknown N/A comms_lost The vehicle went out of comms while being reserved by a passenger
stopped available N/A driver_cancellation The driver has canceled the trip while either waiting for the passenger, or dropping them off
stopped available N/A passenger_cancellation The passenger has canceled the trip while the vehicle is waiting to pick them up, or they are being dropped off
stopped available N/A provider_cancellation The provider has canceled the trip while the vehicle is waiting for a passenger, or dropping them off
stopped available N/A trip_end The trip has been successfully completed
stopped on_trip on_trip trip_resume Resume a trip that was previously stopped (e.g. picking up a friend to go to the airport with)
stopped on_trip on_trip trip_start Start a trip
stopped stopped stopped charging_start Start charging the device battery
stopped stopped stopped charging_end End charging the device battery
stopped stopped stopped fueling_start Start fueling the device with physical fuel
stopped stopped stopped fueling_end End fueling the device with physical fuel
stopped stopped stopped remote_start Remotely start the engine while vehicle is stopped, usually to charge battery or warm up
stopped stopped stopped remote_end Remotely stop the engine while vehicle is already stopped
stopped unknown N/A comms_lost The vehicle has went out of comms while stopped
unknown available N/A comms_restored The vehicle has come back into comms while available for-hire
unknown elsewhere N/A comms_restored The vehicle has come back into comms while outside of jurisdictional boundaries
unknown non_operational N/A comms_restored The vehicle has come back into comms while not operating commercially
unknown on_trip on_trip comms_restored The vehicle has come back into comms while on a trip
unknown removed N/A comms_restored The vehicle has come back into comms while removed
unknown reserved reserved comms_restored The vehicle has come back into comms while reserved by a passenger
unknown stopped stopped comms_restored The vehicle has come back into comms while stopped

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State Machine Diagram

The Car Share State Machine Diagram shows how the vehicle_state and event_type relate to each other and how taxi vehicles can transition between states. See this text-editable EPS for the source file.

Car Share State Machine Diagram

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