Members of the Cooperative Automated Transportation Coalition Infrastructure-Industry (CAT I-I) Working Group shared recently that they are assembling a primer with acronyms and definitions for autonomous vehicle (AV) and connected vehicle (CV) infrastructure and technology.

The primer is not the first of its kind but intended to “bridge the gap” between Infrastructure Owner-Operators (IOOs) and Original Equipment Manufacturer (OEM) practitioners, according to the CAT I-I working group members.

The working group's recent meeting also included presentations by Ted Hamer, managing director at KPMG Corporate Finance, and Paul Carlson, chief technology officer at Road Infrastructure Inc.

The Federal Highway administration issued a Manual on Uniform Traffic Control Devices or Streets and Highways (MUTCD) official ruling this week pertaining to syntax on changeable message sign messaging.

Official Ruling No. 2(09)-174 provides an official interpretation for the question of “whether the MUTCD provides for displays on changeable message signs (CMS) that use unconventional wording typically not found on standard signing and how public input into the development of CMS messages may be used.”

The ruling notes that the devices should not contain advertising or messages unrelated to traffic control and then reviews the five principles for an effective traffic control device: fulfill a need; command attention; convey a clear, simple meaning; command respect from road users; and give adequate time for proper response.