US: SAE Other J2735 - Wide Area Broadcast
Description
This solution is used within Canada and the U.S.. It combines standards associated with US: SAE Other J2735 with those for C–X: Wide Area Broadcast. The US: SAE Other J2735 standards include upper–layer standards required to implement V2X information flows that do not yet have fully specified functionality and performance charcateristics. The C–X: Wide Area Broadcast standards include lower–layer standards that support one entity broadcasting information to all wireless devices over an area that covers at least a metropolitan area without any expectation of acknowledgement or response; security is provided by the upper–layers.
Includes Standards
| Level | DocNum | FullName | Description |
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| Mgmt | | Proprietary | A proprietary mechanism to provide services for this layer. |
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| Security | | Proprietary | A proprietary mechanism to provide services for this layer. |
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| ITS Application Entity | SAE J2735 | V2X Communications Message Set Dictionar | 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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| Facilities | SAE J2735 | V2X Communications Message Set Dictionar | 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 | | Proprietary | A proprietary mechanism to provide services for this layer. |
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| Access | | Satellite Broadcast Alternatives | A set of alternative standards that includes all satellite–based wireless broadcast technologies. |
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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 |
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| Application specification not defined | High | The logic, performance, and application security rules are not defined for this information flow. | (None) | (All) |
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| Overlap of standards | Medium | Multiple standards have been developed to address this information and it is unclear which standard should be used to address this specific information flow. | (None) | KDOT TOC Information System=>broadcast traveler information=>Vehicle |
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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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| Ubiquitous broadcast technology | Low | With the continual enhancement of broadcast technologies and a mixture of free and subscriber–based systems, it is difficult to identify any single technology that can be used to reliably reach the bulk of drivers in a timely manner. | (None) | (All) |
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Supports Interfaces
| Source | Destination | Flow |
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| KDOT TOC Information System | Vehicle | broadcast traveler information |
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