OKI Regional ITS Architecture

US: SAE Lane-Level Mapping - Secure Wireless Internet (ITS)

Description

This solution is used within the U.S.. It combines standards associated with US: SAE Lane–Level Mapping with those for I–M: Secure Wireless Internet (ITS). The US: SAE Lane–Level Mapping standards include upper–layer standards required to implement lane–level and road furniture mapping information flows. The I–M: Secure Wireless Internet (ITS) standards include lower–layer standards that support secure communications between two entities, either or both of which may be mobile devices, but they must be stationary or only moving within wireless range of a single wireless access point (e.g., a parked car). Security is based on X.509 or IEEE 1609.2 certificates. A non–mobile (if any) endpoint may connect to the service provider using any Internet connection method.

Includes Standards

Level	DocNum	FullName	Description
ITS Application Entity	SAE J2945/A	Standard for Lane–Level and Road Furniture Mapping for Infrastructure–based V2X Applications	The document provides a generalized mapping solution that can be applied to future infrastructure–based application standards using a layering approach, so that each new application standard at most needs to define a new layer of information that is unique to specific V2X application. It provides an ability to describe small, lane–level map descriptions that apply directly to V2X applications such as reduced speed zones (e.g. work zones) and curves (e.g. curve speed warning).
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.
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.
Facilities	SAE J2945/A	Standard for Lane–Level and Road Furniture Mapping for Infrastructure–based V2X Applications	The document provides a generalized mapping solution that can be applied to future infrastructure–based application standards using a layering approach, so that each new application standard at most needs to define a new layer of information that is unique to specific V2X application. It provides an ability to describe small, lane–level map descriptions that apply directly to V2X applications such as reduced speed zones (e.g. work zones) and curves (e.g. curve speed warning).

Readiness: High–Moderate

Readiness Description

One significant or possibly a couple minor issues. For existing deployments, the chosen solution likely has identified security or management issues not addressed by the communications solution. Deployers should consider additional security measures, such as communications link and physical security as part of these solutions. They should also review the management issues to see if they are relevant to their deployment and would require mitigation. For new deployments, the deployment efforts should consider a path to addressing these issues as a part of their design activities. The solution does not by itself provide a fully secure implementation without additional work.

Issues

Issue	Severity	Description	Associated Standard	Associated Triple
Still under development	Medium	A draft of the standard has been developed by the working group, but it was still under development at the time this analysis was performed.	SAE J2945/A Lane–Level & Road Furniture Mapping	(All)
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)

Supports Interfaces

Source	Destination	Flow
Private Map Update Systems	BCRTA Transit Vehicles	roadway geometry
Private Map Update Systems	Cincinnati Fire/EMS Vehicles	roadway geometry
Private Map Update Systems	Cincinnati Maintenance Vehicles	roadway geometry
Private Map Update Systems	Cincinnati Police Vehicles	roadway geometry
Private Map Update Systems	City and County Fire/EMS Vehicles	roadway geometry
Private Map Update Systems	City and County Police/Sheriffs Vehicles	roadway geometry
Private Map Update Systems	Commercial Vehicles and Barges	roadway geometry
Private Map Update Systems	Connected/Automated Vehicles	roadway geometry
Private Map Update Systems	CTC Transit Vehicles	roadway geometry
Private Map Update Systems	CVG Emergency Response Vehicles	roadway geometry
Private Map Update Systems	Hamilton County Fire/EMS Vehicles	roadway geometry
Private Map Update Systems	Hamilton County Maintenance Vehicle	roadway geometry
Private Map Update Systems	Hamilton County Sheriffs Vehicles	roadway geometry
Private Map Update Systems	Hoosier Helper Safety Service Patrol	roadway geometry
Private Map Update Systems	Indiana State Police Vehicles	roadway geometry
Private Map Update Systems	INDOT Maintenance Vehicles	roadway geometry
Private Map Update Systems	KSP Troop Vehicles	roadway geometry
Private Map Update Systems	KYTC District 6 Maintenance Vehicles	roadway geometry
Private Map Update Systems	Local Transit Vehicles	roadway geometry
Private Map Update Systems	ODOT Freeway Safety Patrol	roadway geometry
Private Map Update Systems	ODOT Maintenance Vehicles	roadway geometry
Private Map Update Systems	Ohio State Highway Patrol Vehicles	roadway geometry
Private Map Update Systems	Other City and County Maintenance Vehicles	roadway geometry
Private Map Update Systems	Other Public Safety Vehicles	roadway geometry
Private Map Update Systems	RAMP Transit Vehicles	roadway geometry
Private Map Update Systems	SORTA ACCESS Vehicles	roadway geometry
Private Map Update Systems	SORTA Fixed Route Vehicles	roadway geometry
Private Map Update Systems	TANK Transit Vehicles	roadway geometry
Private Map Update Systems	TRIMARC Freeway Service Patrol (KYTC)	roadway geometry
Private Map Update Systems	University of Cincinnati Shuttle Vehicles	roadway geometry