OKI Regional ITS Architecture

US: SAE Signal Preemption - WAVE TCP

Description

This solution is used within the U.S.. It combines standards associated with US: SAE Signal Preemption with those for V–X: WAVE TCP. The US: SAE Signal Preemption standards include upper–layer standards required to implement signal preemption and priority information flows. The V–X: WAVE TCP standards include lower–layer standards that support connection–oriented vehicle–to–any communications within ~300m using the Transmission Control Protocol (TCP) over Internet Protocol version 6 (IPv6) over IEEE WAVE in the 5.9GHz spectrum.

Includes Standards

Level	DocNum	FullName	Description
Mgmt	Addressed Elsewhere	Addressed Elsewhere in Stack	The services related to this portion of the stack are defined in the other standards listed for this solution.
ITS Application Entity	CEN ISO 19091	Intelligent transport systems –– Cooperative ITS –– Using V2I and I2V communications for applications related to signalized intersections	This technical specification defines messages and related data structures and data elements for the following exchanges between roadside equipment and vehicles: 1) Definition of the SPaT (signal phase and timing) message transmitted from a traffic controller that describes the state of the signals, signal timing as necessary to support the applications identified herein; 2) definition of the MAP message (which include the definition of motorized lane, vehicles, busses, trams, bicycle, pedestrian crosswalks, etc.); and 3) definition of the messages (SRM, SSM) to be exchanged between an intersection traffic controller and approaching vehicles to support priority treatment as might be expected for emergency response , freight transport, and public transport vehicles to improve safety.
ITS Application Entity	SAE J2735	Dedicated Short Range Communications (DSRC) Message Set Dictionary (TM)	This standard defines the data and messages for use in DSRC (i.e., V2V, V2I, and V2D) applications. The SAE J2945 series defines additional requirements on how to use these messages.
ITS Application Entity	SAE J2945/B	Recommended Practices for Signalized Intersection Applications	This document provides guidance on usage of SAE J2735 and other related information for signalized intersection applications. The document focuses on how to use SPaT and MAP messages to support signalized–intersection applications. In general, implementation guidance is necessary to achieve interoperability by addressing the requirements for the options for both over the air dialogs and message contents, and to support larger intersection maps This document also addresses using Signal Request & Signal Status messages corresponding to vehicle functionality and approaches to traffic signal priority/pre–emption (TSP), including three different methods for implementing TSP over the air. The project is complementary to the connected intersections project being performed by ITE.
Facilities	SAE J2735	Dedicated Short Range Communications (DSRC) Message Set Dictionary (TM)	This standard defines the data and messages for use in DSRC (i.e., V2V, V2I, and V2D) applications. The SAE J2945 series defines additional requirements on how to use these messages.
Facilities	SAE J2945	Dedicated Short Range Communication (DSRC) Systems Engineering Process Guidance for J2945/x Documents and Common Design Concepts	This standard defines cross–cutting material which applies to the J2945/x series including generic DSRC interface requirements and guidance on Systems Engineering (SE) content.
TransNet	IETF RFC 793	Transmission Control Protocol	This standard (RFC) defines the main connection–oriented Transport Layer protocol used on Internet–based networks.
TransNet	IEEE 1609.3	IEEE Standard for Wireless Access in Vehicular Environments (WAVE) – Networking Services	This standard defines the network and transport layer options for the WAVE environment. The standard defines three options: a bandwidth efficient single–hop solution known as WSMP, UDP/IP, and TCP/IP. It has been harmonized with ISO FNTP and FSAP – a common message format specified in ISO 16460.

Readiness: Moderate

Readiness Description

Two significant or one significant and several minor issues. For existing deployments, the chosen solution is likely deficient in security or management capabilities and the issues should be reviewed and upgrades developed as needed. For new deployments, the solution may be viable for pilots when applied to the triples it supports; such pilot deployments should consider a path to addressing these issues as a part of their design activities. The solution does not provide sufficient interoperability, management, and security to enable proper, full–scale deployment without additional work.

Issues

Issue	Severity	Description	Associated Standard	Associated Triple
Data not defined in standard format	Low	The definition of data concepts should conform to ISO 14817–1 to promote reuse among ITS.	SAE J2735 DSRC Message Set	(All)
Guidance document under development	Low	This recommended practice on how to use the related standards is still under development but is not seen as strictly necessary to begin deployment of equipment.	SAE J2945/B Signal Intersection Applications	(All)
Not a standard (minor)	Low	The document is publicly available and widely used but it is not currently a formal standard.	ISO 19091 V2I for signalized intersections	(All)

Supports Interfaces

Source	Destination	Flow
BCRTA Transit Vehicles	Cincinnati Field Equipment	local signal priority request
BCRTA Transit Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
BCRTA Transit Vehicles	City and County Field Equipment	local signal priority request
BCRTA Transit Vehicles	Hamilton County Field Equipment	local signal priority request
BCRTA Transit Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
BCRTA Transit Vehicles	ODOT Traffic Signal Roadway Equipment	local signal priority request
Cincinnati Fire/EMS Vehicles	Cincinnati Field Equipment	local signal preemption request
Cincinnati Fire/EMS Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
Cincinnati Fire/EMS Vehicles	City and County Field Equipment	local signal preemption request
Cincinnati Fire/EMS Vehicles	Hamilton County Field Equipment	local signal preemption request
Cincinnati Fire/EMS Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Cincinnati Fire/EMS Vehicles	ODOT District 8 Field Equipment	local signal preemption request
Cincinnati Police Vehicles	Cincinnati Field Equipment	local signal preemption request
Cincinnati Police Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
Cincinnati Police Vehicles	City and County Field Equipment	local signal preemption request
Cincinnati Police Vehicles	Hamilton County Field Equipment	local signal preemption request
Cincinnati Police Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Cincinnati Police Vehicles	ODOT Traffic Signal Roadway Equipment	local signal preemption request
Cincinnati Streetcar Rail Vehicles	Cincinnati Field Equipment	local signal priority request
City and County Connected Vehicle Roadside Equipment	BCRTA Transit Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	Cincinnati Fire/EMS Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	Cincinnati Police Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	City and County Fire/EMS Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	City and County Police/Sheriffs Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	Commercial Vehicles and Barges	signal priority status
City and County Connected Vehicle Roadside Equipment	CTC Transit Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	CVG Emergency Response Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	Hamilton County Fire/EMS Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	Hamilton County Sheriffs Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	Local Transit Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	Other Public Safety Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	RAMP Transit Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	SORTA ACCESS Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	SORTA Fixed Route Vehicles	signal priority status
City and County Connected Vehicle Roadside Equipment	TANK Transit Vehicles	signal priority status
City and County Fire/EMS Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
City and County Fire/EMS Vehicles	City and County Field Equipment	local signal preemption request
City and County Fire/EMS Vehicles	CVG Airport Connected Vehicle Roadside Equipment	local signal preemption request
City and County Fire/EMS Vehicles	Hamilton County Field Equipment	local signal preemption request
City and County Fire/EMS Vehicles	INDOT Connected Vehicle RSE	local signal preemption request
City and County Fire/EMS Vehicles	INDOT Traffic Signal Roadway Equipment	local signal preemption request
City and County Fire/EMS Vehicles	KYTC Traffic Signal Roadway Equipment	local signal preemption request
City and County Fire/EMS Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
City and County Fire/EMS Vehicles	ODOT Traffic Signal Roadway Equipment	local signal preemption request
City and County Police/Sheriffs Vehicles	Cincinnati Field Equipment	local signal preemption request
City and County Police/Sheriffs Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
City and County Police/Sheriffs Vehicles	City and County Field Equipment	local signal preemption request
City and County Police/Sheriffs Vehicles	CVG Airport Connected Vehicle Roadside Equipment	local signal preemption request
City and County Police/Sheriffs Vehicles	Hamilton County Field Equipment	local signal preemption request
City and County Police/Sheriffs Vehicles	INDOT Connected Vehicle RSE	local signal preemption request
City and County Police/Sheriffs Vehicles	KYTC District 6 Field Equipment	local signal preemption request
City and County Police/Sheriffs Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Commercial Vehicles and Barges	City and County Connected Vehicle Roadside Equipment	local signal priority request
Commercial Vehicles and Barges	CVG Airport Connected Vehicle Roadside Equipment	local signal priority request
Commercial Vehicles and Barges	INDOT Connected Vehicle RSE	local signal priority request
Commercial Vehicles and Barges	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
CTC Transit Vehicles	Cincinnati Field Equipment	local signal priority request
CTC Transit Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
CTC Transit Vehicles	City and County Field Equipment	local signal priority request
CTC Transit Vehicles	Hamilton County Field Equipment	local signal priority request
CTC Transit Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
CTC Transit Vehicles	ODOT Traffic Signal Roadway Equipment	local signal priority request
CVG Airport Connected Vehicle Roadside Equipment	Local Transit Vehicles	signal priority status
CVG Airport Connected Vehicle Roadside Equipment	RAMP Transit Vehicles	signal priority status
CVG Airport Connected Vehicle Roadside Equipment	TANK Transit Vehicles	signal priority status
CVG Emergency Response Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
CVG Emergency Response Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Hamilton County Fire/EMS Vehicles	Cincinnati Field Equipment	local signal preemption request
Hamilton County Fire/EMS Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
Hamilton County Fire/EMS Vehicles	City and County Field Equipment	local signal preemption request
Hamilton County Fire/EMS Vehicles	Hamilton County Field Equipment	local signal preemption request
Hamilton County Fire/EMS Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Hamilton County Sheriffs Vehicles	Cincinnati Field Equipment	local signal preemption request
Hamilton County Sheriffs Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
Hamilton County Sheriffs Vehicles	City and County Field Equipment	local signal preemption request
Hamilton County Sheriffs Vehicles	Hamilton County Field Equipment	local signal preemption request
Hamilton County Sheriffs Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Indiana State Police Vehicles	City and County Field Equipment	local signal preemption request
Indiana State Police Vehicles	INDOT Connected Vehicle RSE	local signal preemption request
Indiana State Police Vehicles	INDOT Traffic Signal Roadway Equipment	local signal preemption request
INDOT Connected Vehicle RSE	City and County Fire/EMS Vehicles	signal priority status
INDOT Connected Vehicle RSE	City and County Police/Sheriffs Vehicles	signal priority status
INDOT Connected Vehicle RSE	Commercial Vehicles and Barges	signal priority status
INDOT Connected Vehicle RSE	Indiana State Police Vehicles	signal priority status
INDOT Connected Vehicle RSE	Local Transit Vehicles	signal priority status
INDOT Connected Vehicle RSE	Other Public Safety Vehicles	signal priority status
KSP Troop Vehicles	City and County Field Equipment	local signal preemption request
KSP Troop Vehicles	KYTC Traffic Signal Roadway Equipment	local signal preemption request
KSP Troop Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Local Transit Vehicles	Cincinnati Field Equipment	local signal priority request
Local Transit Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
Local Transit Vehicles	City and County Field Equipment	local signal priority request
Local Transit Vehicles	CVG Airport Connected Vehicle Roadside Equipment	local signal priority request
Local Transit Vehicles	Hamilton County Field Equipment	local signal priority request
Local Transit Vehicles	INDOT Connected Vehicle RSE	local signal priority request
Local Transit Vehicles	INDOT Traffic Signal Roadway Equipment	local signal priority request
Local Transit Vehicles	KYTC Traffic Signal Roadway Equipment	local signal priority request
Local Transit Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
Local Transit Vehicles	ODOT Traffic Signal Roadway Equipment	local signal priority request
ODOT / KYTC Connected Vehicle Roadside Equipment	BCRTA Transit Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Cincinnati Fire/EMS Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Cincinnati Police Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Cincinnati Streetcar Rail Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	City and County Fire/EMS Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	City and County Police/Sheriffs Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Commercial Vehicles and Barges	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	CTC Transit Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	CVG Emergency Response Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Hamilton County Fire/EMS Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Hamilton County Sheriffs Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	KSP Troop Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Local Transit Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Ohio State Highway Patrol Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	Other Public Safety Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	RAMP Transit Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	SORTA ACCESS Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	SORTA Fixed Route Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	TANK Transit Vehicles	signal priority status
ODOT / KYTC Connected Vehicle Roadside Equipment	University of Cincinnati Shuttle Vehicles	signal priority status
Ohio State Highway Patrol Vehicles	Cincinnati Field Equipment	local signal preemption request
Ohio State Highway Patrol Vehicles	City and County Field Equipment	local signal preemption request
Ohio State Highway Patrol Vehicles	Hamilton County Field Equipment	local signal preemption request
Ohio State Highway Patrol Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
Ohio State Highway Patrol Vehicles	ODOT Traffic Signal Roadway Equipment	local signal preemption request
Other Public Safety Vehicles	Cincinnati Field Equipment	local signal preemption request
Other Public Safety Vehicles	City and County Connected Vehicle Roadside Equipment	local signal preemption request
Other Public Safety Vehicles	City and County Field Equipment	local signal preemption request
Other Public Safety Vehicles	CVG Airport Connected Vehicle Roadside Equipment	local signal preemption request
Other Public Safety Vehicles	Hamilton County Field Equipment	local signal preemption request
Other Public Safety Vehicles	INDOT Connected Vehicle RSE	local signal preemption request
Other Public Safety Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal preemption request
RAMP Transit Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
RAMP Transit Vehicles	City and County Field Equipment	local signal priority request
RAMP Transit Vehicles	CVG Airport Connected Vehicle Roadside Equipment	local signal priority request
RAMP Transit Vehicles	KYTC District 6 Field Equipment	local signal priority request
RAMP Transit Vehicles	KYTC Traffic Signal Roadway Equipment	local signal priority request
RAMP Transit Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
RAMP Transit Vehicles	ODOT Traffic Signal Roadway Equipment	local signal priority request
SORTA ACCESS Vehicles	Cincinnati Field Equipment	local signal priority request
SORTA ACCESS Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
SORTA ACCESS Vehicles	City and County Field Equipment	local signal priority request
SORTA ACCESS Vehicles	Hamilton County Field Equipment	local signal priority request
SORTA ACCESS Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
SORTA ACCESS Vehicles	ODOT Traffic Signal Roadway Equipment	local signal priority request
SORTA Fixed Route Vehicles	Cincinnati Field Equipment	local signal priority request
SORTA Fixed Route Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
SORTA Fixed Route Vehicles	City and County Field Equipment	local signal priority request
SORTA Fixed Route Vehicles	Hamilton County Field Equipment	local signal priority request
SORTA Fixed Route Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
SORTA Fixed Route Vehicles	ODOT Traffic Signal Roadway Equipment	local signal priority request
TANK Transit Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
TANK Transit Vehicles	City and County Field Equipment	local signal priority request
TANK Transit Vehicles	CVG Airport Connected Vehicle Roadside Equipment	local signal priority request
TANK Transit Vehicles	KYTC Traffic Signal Roadway Equipment	local signal priority request
TANK Transit Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
University of Cincinnati Shuttle Vehicles	Cincinnati Field Equipment	local signal priority request
University of Cincinnati Shuttle Vehicles	City and County Connected Vehicle Roadside Equipment	local signal priority request
University of Cincinnati Shuttle Vehicles	City and County Field Equipment	local signal priority request
University of Cincinnati Shuttle Vehicles	Hamilton County Field Equipment	local signal priority request
University of Cincinnati Shuttle Vehicles	ODOT / KYTC Connected Vehicle Roadside Equipment	local signal priority request
University of Cincinnati Shuttle Vehicles	ODOT Traffic Signal Roadway Equipment	local signal priority request