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SAE J2945/B
Minimum Requirements to Support Traffic Signal Priority and Preemption
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STANDARD published on 1.11.2025
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The information about the standard:
Designation standards: SAE J2945/B
Publication date standards: 1.11.2025
SKU: NS-1248863
Country: American technical standard
Category: Technical standards SAE
Annotation of standard text SAE J2945/B :
When identifying the content of this report, one of the goals was that it supports a nationally interoperable method for connected vehicles (CVs) to make traffic signal priority and/or preemption (TSPP) requests of connected intersections (CIs) that support priority and/or preemption services. Given that, this report specifies the over-the-air (OTA) interface between CVs and CIs to support TSPP applications using updated revisions of the SAE J2735 Signal Request Message (SRM) and Signal Status Message (SSM) and the use of a Wireless Access in Vehicular Environments (WAVE) Service Advertisement (WSA) to advertise support for TSPP at a CI. Included are a concept of operations, requirements, design, and message structure definitions developed using a detailed systems engineering process.
TYPE OF DOCUMENT: Ground Vehicle Standard
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