Kind: Subsystem

Class: Field

Type: System

Pathway Communications Unit


The 'Pathway Communications Unit' provides wireless communications between the pathway infrastructure (either indoor or outdoor) and nearby mobile devices; Communications with adjacent field equipment (including other PCUs) and back-office centers that monitor and control the PCU are also supported. The PCU provides basic radio communications supporting the lower layers of the OSI stack (TransNet and SubNet layers of the ARC-IT communications model). Importantly, it can also serve as a reference for mobile devices to determine their position more accurately (e.g., through triangulation or other means).

This physical object is included in the following Service Packages:


Functional Object
PCU Communications


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
Class 1 Not Applicable Moderate Low Personal Wayfinding

Interfaces Diagram

Interfaces diagram


Currently, there are no standards associated with the physical object itself though the interfaces may have standards associated with them. For standards related to interfaces, see the specific information flow triple pages.