Region 5

ITS Architecture

Definitions and Acronyms

Region 5

Elements

Stakeholders

Regional Subsystem Interconnect Diagram

Standards

Full Architecture Document

National ITS Architecture

Roadway

This subsystem includes the equipment distributed on and along the roadway which monitors and controls traffic and monitors and manages the roadway itself.  Equipment includes traffic detectors, environmental sensors, traffic signals, highway advisory radios, dynamic message signs, CCTV cameras and video image processing systems, grade crossing warning systems, and freeway ramp metering systems.  HOV lane management and reversible lane management functions are also available.  This subsystem also provides the capability for environmental monitoring including sensors that measure road conditions, surface weather, and vehicle emissions.  In adverse conditions, automated systems can be used to apply anti-icing materials, disperse fog, etc.  Work zone systems including work zone surveillance, traffic control, driver warning, and work crew safety systems are also included.   In advanced implementations, this subsystem supports automated vehicle safety systems by safely controlling access to and egress from an Automated Highway System through monitoring of, and communications with, AHS vehicles.  Intersection collision avoidance functions are provided by determining the probability of a collision in the intersection and sending appropriate warnings and/or control actions to the approaching vehicles. 

Elements

• Municipal Field Devices

• PennDOT Central Office Field Devices

• PennDOT D5 Field Devices

• PTC Field Devices

• Regional Media Field Devices

Site last updated: September 6, 2006