US: SAE Lane-Level Mapping -  WAVE WSMP
Description:
This solution is used within Canada and the U.S..  It combines standards associated with US: SAE Lane-Level Mapping with those for V-X: WAVE WSMP. The US: SAE Lane-Level Mapping standards include upper-layer standards required to implement lane-level and road furniture mapping information flows.  The V-X: WAVE WSMP standards include lower-layer standards that support connectionless, near constant, ultra-low latency vehicle-to-any communications within ~300m using the WAVE Short Messaging Protocol (WSMP) over IEEE WAVE in the 5.9GHz spectrum. The broadcast mode is interoperable with M5 FNTP.
Comm Profile: V-X: WAVE WSMP
 
Standards in Profile:
| Level | Doc # | Standard | Description | 
|---|
| Access |  | Bundle: WAVE - Subnet | A bundle of standards specifying the lower layers of the reference communications model for the US DSRC environment. | 
| Security |  | Bundle: IEEE 1609.2 | A bundle of standards that groups a set of IEEE security standards together for easy reference. | 
| TransNet | IEEE 1609.3 | IEEE 1609.3 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. | 
Data Profile: US: SAE Lane-Level Mapping
 
Standards in Profile:
| Level | Doc # | Standard | Description | 
|---|
| Facilities | SAE J2945 | SAE J2945/0 DSRC Common Design Elements | 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 | SAE J2945/A Road Geometry | 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 | SAE J2735 DSRC Message Set | 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/A | SAE J2945/A Road Geometry | 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 Description: 
One serious or several significant issues. This category often includes proprietary or partial solutions.  The communications solution may fail to provide even a base level of interoperability and security.  Consider alternative solutions, or define specific revisions or upgrades that would provide a level of interoperability or security that are needed for the deployment.
Last Updated 8/26/2025