SAE J2945™/1 MAR2026 On-Board System Requirements for V2V Safety Communications

A stabilized SAE standard defining functional and performance requirements for on-board V2V safety communications in light vehicles.

SAE J2945™/1 MAR2026 specifies system requirements for on-board vehicle-to-vehicle (V2V) safety communications systems used in light vehicles. The standard defines standards profiles, functional requirements, performance requirements, positioning and timing requirements, Basic Safety Message transmission criteria, RF performance, security and privacy controls, and security management procedures. It supports the exchange of SAE J2735 Basic Safety Messages over Dedicated Short Range Communications using the IEEE 802.11 and IEEE 1609 standards. Covered safety applications include Emergency Electronic Brake Lights, Forward Crash Warning, Blind Spot Warning, Lane Change Warning, Intersection Movement Assist, Left Turn Assist, and Control Loss Warning. This document was issued in March 2016, revised in April 2020, and stabilized in March 2026, superseding SAE J2945/1 APR2020. It contains 114 pages and is provided in PDF format.

Application Scope: Intended for automotive engineers, vehicle manufacturers, communication system developers, safety application designers, testing organizations, and researchers implementing or evaluating interoperable V2V safety communication systems for light vehicles.