Vehicle --> Transit Vehicle OBE:
vehicle location and motion

Definitions

vehicle location and motion (Information Flow): Data describing the vehicle's location in three dimensions, heading, speed, acceleration, braking status, and size.

Vehicle (Source Physical Object): This 'Vehicle' physical object is used to model core capabilities that are common to more than one type of Vehicle. It provides the vehicle-based general sensory, processing, storage, and communications functions that support efficient, safe, and convenient travel. Many of these capabilities (e.g., see the Vehicle Safety service packages) apply to all vehicle types including personal vehicles, commercial vehicles, emergency vehicles, transit vehicles, and maintenance vehicles. From this perspective, the Vehicle includes the common interfaces and functions that apply to all motorized vehicles. The radio(s) supporting V2V and V2I communications are a key component of the Vehicle. Both one-way and two-way communications options support a spectrum of information services from basic broadcast to advanced personalized information services. Advanced sensors, processors, enhanced driver interfaces, and actuators complement the driver information services so that, in addition to making informed mode and route selections, the driver travels these routes in a safer and more consistent manner. This physical object supports all six levels of driving automation as defined in SAE J3016. Initial collision avoidance functions provide 'vigilant co-pilot' driver warning capabilities. More advanced functions assume limited control of the vehicle to maintain lane position and safe headways. In the most advanced implementations, this Physical Object supports full automation of all aspects of the driving task, aided by communications with other vehicles in the vicinity and in coordination with supporting infrastructure subsystems.

Transit Vehicle OBE (Destination Physical Object): The 'Transit Vehicle On-Board Equipment' (OBE) resides in a transit vehicle and provides the sensory, processing, storage, and communications functions necessary to support safe and efficient movement of passengers. The types of transit vehicles containing this physical object include buses, paratransit vehicles, light rail vehicles, other vehicles designed to carry passengers, and supervisory vehicles. It collects ridership levels and supports electronic fare collection. It supports a traffic signal prioritization function that communicates with the roadside physical object to improve on-schedule performance. Automated vehicle location enhances the information available to the transit operator enabling more efficient operations. On-board sensors support transit vehicle maintenance. The physical object supports on-board security and safety monitoring. This monitoring includes transit user or vehicle operator activated alarms (silent or audible), as well as surveillance and sensor equipment. The surveillance equipment includes video (e.g. CCTV cameras), audio systems and/or event recorder systems. It also furnishes travelers with real-time travel information, continuously updated schedules, transfer options, routes, and fares. A separate 'Vehicle OBE' physical object supports the general vehicle safety and driver information capabilities that apply to all vehicles, including transit vehicles. The Transit Vehicle OBE supplements these general capabilities with capabilities that are specific to transit vehicles.

Included In

This Triple is an instantiation of the more general triple:

• Vehicle => Other Vehicles: vehicle location and motion

This Triple is in the following Service Packages:

• PT12: Transit Vehicle at Station/Stop Warnings
• PT13: Vehicle Turning Right in Front of a Transit Vehicle

This triple is associated with the following Functional Objects:

• Vehicle Basic Safety Communication
• Vehicle Gap Assist
• Vehicle Rail Crossing Warning
• Vehicle Restricted Lanes Application

This Triple is described by the following Functional View Data Flows:

• tov-acceleration
• tov-braking_status
• tov-heading
• tov-speed
• tov-steering
• tov-transmission_status
• tov-vehicle_identity
• tov-vehicle_location
• tov-vehicle_size
• vehicle_to_transit_current_status_data
• vehicle_to_transit_device_identity
• vehicle_to_transit_location_data
• vehicle_to_transit_size_data
• vehicle_to_transit_speed_data
• vehicle_to_transit_time_data

This Triple has the following triple relationships:

Communication Solutions

• US: SAE LTE-V2X BSM - LTE-V2X WSMP (16)
• US: SAE Basic Safety Messages - WAVE WSMP (18)

Selected Solution

Solution Description

ITS Application Entity SAE J2735 SAE J3161/1			Click gap icons for more info.
Mgmt SAE J3161 3GPP 24.301 3GPP 36.331	Facilities SAE J2735	Security Bundle: IEEE 1609.2
	TransNet IEEE 1609.3
	Access Bundle: 3GPP LTE-V2X

Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Security