Physical Object: Transit Vehicle OBE

Transit Vehicle V2V Safety

Overview
Requirements
Information Flows
Standards

Overview

'Transit Vehicle V2V Safety' exchanges current vehicle location and motion information with other vehicles in the vicinity, uses that information to predict vehicle paths, and notifies the driver when the potential for an impending collision is detected. Information from on-board sensors (e.g., radars and image processing) are used to augment the V2V communications, if available. In addition to notifying the driver, control information can also be provided to support automated control functions that can avoid the collision. This object is similar to the 'Vehicle Basic V2V Safety', but it accounts for crash scenarios that are unique to transit vehicles (e.g., Vehicle Turning Right in Front of Bus). It is also stop-aware since stop locations pose specific crash threats for transit vehicles. Finally, the detection and control algorithms, filters, and timing account for bus performance and risk profiles associated with remote vehicles that are unique to transit.

This functional object is included in the "Transit Vehicle OBE" physical object.

This functional object is included in the following service packages:

This functional object is mapped to the following Functional View PSpecs:

Requirements

#	Requirement
01	The transit vehicle shall exchange current vehicle location and motion information with other vehicles in the vicinity.
02	The transit vehicle shall provide to other vehicles an indication of its intent to leave a transit stop.
03	The transit vehicle shall provide a warning to the transit vehicle operator if a nearby vehicle is a collision threat as the transit vehicle prepares to leave a stop or station.
04	The transit vehicle shall identify if another vehicle is pulling in front of it to make a right turn using location information received from other vehicles.
05	The vehicle shall broadcast transit vehicle behavioral information (pulling out, about to stop, etc.) to other vehicles in the vicinity.
06	The vehicle shall acquire transit vehicle trajectory information.

Information Flows

Source	Flow	Destination
Basic Transit Vehicle	host transit vehicle status	Transit Vehicle OBE
Transit Management Center	transit stop locations	Transit Vehicle OBE
Transit Vehicle OBE	collision warning information	Basic Transit Vehicle
Transit Vehicle OBE	vehicle path prediction	Connected Vehicle Roadside Equipment
Transit Vehicle OBE	vehicle path prediction	Personal Information Device
Transit Vehicle OBE	transit vehicle operator display	Transit Vehicle Operator
Transit Vehicle OBE	special vehicle alert	Vehicle
Transit Vehicle Operator	transit vehicle operator input	Transit Vehicle OBE

Standards

Currently, there are no standards associated with the functional object itself though the interfaces may have standards associated with them.