Roadside Communications Unit

Overview
Functionality
Triples
Security
Interfaces Diagram
Standards

Overview

The 'Roadside Communications Unit' provides wireless communications between roadside infrastructure and nearby equipped vehicles. Communications with adjacent field equipment (including other RCUs) and back office centers that monitor and control the RCU are also supported. It provides basic radio communications supporting the lower layers of the OSI stack (TransNet and SubNet layers of the ARC-IT communications model). See also 'Connected Vehicle Roadside Equipment' that extends the basic RCU radio communications functionality with a full communications stack and support for locally installed ITS Applications

This physical object is included in the following Service Packages:

SU07: ITS Communications

Functionality

Functional Object
RCU Radio Communications

Triples

Source	Flow	Destination
ITS Object	ITS information	Roadside Communications Unit
Other ITS Objects	local ITS information	Roadside Communications Unit
Roadside Communications Unit	ITS information	ITS Object
Roadside Communications Unit	local ITS information	Other ITS Objects
Roadside Communications Unit	local ITS information relay	Other ITS Objects

Security

This physical object has the following security levels for the associated service packages.

Physical Object Security
Security Class	Confidentiality	Integrity	Availability	Service Package
Class 5	High	High	High	ITS Communications

Interfaces Diagram

Standards

The following table lists the standards associated with the physical object itself (as opposed to standards associated with an interface). For standards related to interfaces, see the specific information flow triple pages.

Name	Title
CTI 4001 RSU	Dedicated Short-Range Communications Roadside Unit Specifications (FHWA-JPO-17-589)