Transit Vehicle OBE --> Connected Vehicle Roadside Equipment:
transit vehicle information

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

transit vehicle information (Information Flow): Information about the transit vehicle route and stops, including current location along the route and next stop.

Transit Vehicle OBE (Source 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.

Connected Vehicle Roadside Equipment (Destination Physical Object): 'Connected Vehicle Roadside Equipment' (CV RSE) represents the Connected Vehicle roadside devices (i.e., Roadside Units (RSUs)) equipped with short range wireless (SRW) communications technology, as well as any other supporting equipment that leverage the RSU and are not described by other objects (e.g., a local roadside processor). CVRSE are used to send messages to, and receive messages from, nearby vehicles and personal devices equipped with compatible communications technology. Communications with adjacent field equipment and back office centers that monitor and control the RSE are also supported. This device operates from a fixed position and may be permanently deployed or a portable device that is located temporarily in the vicinity of a traffic incident, road construction, or a special event. It includes a processor, data storage, and communications capabilities that support secure communications with passing vehicles, other field equipment, and centers.

Included In

This Triple is in the following Service Packages:

PT15: Transit Stop Request

This triple is associated with the following Functional Objects:

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

This Triple has the following triple relationships:

None

Communication Solutions

Solutions are sorted in ascending Gap Severity order. The Gap Severity is the parenthetical number at the end of the solution.

Selected Solution

(None-Data) - LTE-V2X WSMP

Solution Description

This solution is used within Canada and the U.S.. It combines standards associated with (None-Data) with those for V-X: LTE-V2X WSMP. The (None-Data) standards include an unspecified set of standards at the upper layers. The V-X: LTE-V2X WSMP standards include lower-layer standards that support connectionless, near constant, ultra-low latency vehicle-to-any communications using the WAVE Short Messaging Protocol (WSMP) over 3GPP C-V2X in the 5.9GHz spectrum.

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt SAE J3161 3GPP 24.301 3GPP 36.331	Facilities Development needed	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

Characteristic	Value
Time Context	Recent
Spatial Context	Adjacent
Acknowledgement	False
Cardinality	Broadcast
Initiator	Source
Authenticable	True
Encrypt	False

Interoperability	Description
National	This triple should be implemented consistently within the geopolitical region through which movement is essentially free (e.g., the United States, the European Union).

Security

Information Flow Security
	Confidentiality	Integrity	Availability
Rating	Low	Moderate	Moderate
Basis	Data is intended for public use. Not broadcast, but destination will broadcast, so no need to obfuscate.	General transit schedule information, as well as more specific "next stop" and similar information should be prompt and correct or users will lose confidence and not use the system. Also inconvenienced by the lack of correct and timely information. Impact is localized and limited however, so MODERATE and not HIGH.	General transit schedule information, as well as more specific "next stop" and similar information should be prompt and correct or users will lose confidence and not use the system. Also inconvenienced by the lack of correct and timely information. Impact is localized and limited however, so MODERATE and not HIGH.

Security Characteristics	Value
Authenticable	True
Encrypt	False

Transit Vehicle OBE --> Connected Vehicle Roadside Equipment:transit vehicle information