Alliance Statement on NHTSA’s Vehicle to Vehicle Communications Notice of Proposed Rulemaking


Vehicle connectivity promises to play an important and integrated role in crash prevention and easing traffic congestion, and that can result in improved safety and mobility as well as reduced greenhouse gas emissions.

In addition to our filed comments, the Alliance urges NHTSA to move quickly in publishing a Supplemental Notice of Proposed Rulemaking (SNPRM), which will allow automakers to further provide the agency with productive feedback to help ensure effective implementation. This SNPRM should include more specifics than the current proposal on critical topics including test criteria and the Security Credential Management System.

Alliance members continue working hard to further advance the technologies that can make Vehicle-to-Vehicle communications a reality. However, we already know that other elements beyond automakers’ control are essential to these life-saving technologies. For example, it is especially important to assure that the 5.9 gigahertz spectrum is kept clear from harmful interference so that V2V safety messages which transmit 10 times per second can safely operate. Any harmful interference could result in a crash, or even worse, an injury or fatality.

Other key elements include interoperability among equipped vehicles, and a secure network.

  • Interoperability – Success of a connected vehicle system depends primarily on interoperability. The Alliance supports the need for standard criteria to ensure interoperability and to require the basic data needed to enable safety applications. The data being transmitted can translate into real benefits only if the systems are interoperable. As we contemplate a future where vehicles can increasingly take control in emergency situations and, eventually, in normal driving for the general population, V2V communications can inform and enhance reliability of on-vehicle systems and provide invaluable information to drivers.
  • Secure Network – Critical security and trust features of the Security Credentials Management System (SCMS) must be operational on the first day of the rule’s effective date.