US: SAE Safety Awareness Messages - WAVE WSMP
Description
This solution is used within the U.S.. It combines standards associated with US: SAE Safety Awareness Messages with those for V–X: WAVE WSMP. The US: SAE Safety Awareness Messages standards include upper–layer standards required to implement V2V safety situation awareness 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.
Includes Standards
| Level | DocNum | FullName | Description |
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| 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. |
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| 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. |
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| ITS Application Entity | SAE J2945/1 | On–Board System Requirements for V2V Safety Communications | This standard specifies the system requirements for an on–board vehicle–to–vehicle (V2V) safety communications system for light vehicles, including standards profiles, functional requirements, and performance requirements. |
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| ITS Application Entity | SAE J2945/2 | DSRC Requirements for V2V Safety Awareness | This standard specifies the system requirements for V2V Safety Awareness applications, including the emergency vehicle alert (EVA), roadside alert (RSA), safety awareness – object (SAW–O), and safety awareness – adverse condition (SAW–A) applications. |
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| 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. |
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| 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. |
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| 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. |
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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 |
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| 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) |
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| Not a standard (minor) | Low | The document is publicly available and widely used but it is not currently a formal standard. | SAE J2945/2 V2V Safety Awareness | (All) |
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Supports Interfaces
| Source | Destination | Flow |
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| Connected/Automated Vehicles | INDOT Maintenance Vehicles | vehicle hazard event |
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| Connected/Automated Vehicles | KYTC District 6 Maintenance Vehicles | vehicle hazard event |
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| Connected/Automated Vehicles | ODOT Maintenance Vehicles | vehicle hazard event |
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| INDOT Maintenance Vehicles | Connected/Automated Vehicles | vehicle hazard event |
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| KYTC District 6 Maintenance Vehicles | Connected/Automated Vehicles | vehicle hazard event |
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| ODOT Maintenance Vehicles | Connected/Automated Vehicles | vehicle hazard event |
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