CTI 4001 v01.00, Roadside Unit (RSU) Standard

This Roadside Unit (RSU) Standard v01 supersedes USDOT's Dedicated Short-Range Communications Roadside Unit Specifications v4.1. This RSU Standard v01 was developed by engaging with stakeholders representing the stakeholder community at large, including but not limited to infrastructure owner operators, automobile original equipment manufacturers (OEMs), RSU manufacturers, and the end users of data and services. This document establishes a non-proprietary, communications-agnostic, industry-based consensus RSU Standard. An RSU is a transportation infrastructure communications device that is a part of a Cooperative Intelligent Transport Systems (C-ITS) transportation environment. The goal of such an environment is to reduce the number of fatalities and injuries on roadways, improve mobility, and reduce environmental impacts. Commonly known as Connected Vehicles (CV) in the United States (US), terms such as Vehicle-to-Infrastructure (V2I) and Vehicle-to-Vehicle (V2V) have been used to reflect the types of communications used. The vision for this technology has expanded to include all types of travelers including pedestrians, cyclists, and multimodal travelers and is referred to as Vehicle-to-Everything (V2X) technology and V2X communications. The standard is available from the Institute of Transportation Engineers (ITE) web site at https://www.ite.org/pub/?id=764FB228%2D0F6C%2DBA02%2D6D7B%2D16A86B1F8108