Stakeholder |
Element Name |
Functional Area/Role |
Functional Area Description |
Arizona Department of Transportation |
ADOT DMS |
Roadway Traffic Information Dissemination |
This equipment package includes field elements that provides information to drivers, including dynamic message signs and highway advisory radio. |
Arizona Department of Transportation |
ADOT DMS |
Roadway Equipment Coordination |
This equipment package supports direct communications between field equipment. It includes field elements that control and send data to other field elements. This includes coordination between remote sensors and field devices (e.g., Dynamic Message Signs) and coordination between the field devices themselves (e.g., direct coordination between traffic controllers that are controlling adjacent intersections.). |
Arizona Department of Transportation |
ADOT Lane Management Infrastructure |
Roadway Variable Speed Limits |
This equipment package includes the field equipment, physical overhead lane signs and associated control electronics that are used to manage and control variable speed limits systems. This equipment monitors traffic and environmental conditions along the roadway. The system can be centrally monitored and controlled by a traffic management center or it can be autonomous, calculating and setting suitable speed limits, usually by lane. This equipment located over and along the roadway displays the speed limits and additional information such as basic safety rules and current traffic information to drivers. |
Arizona Department of Transportation |
ADOT TOC |
TMC Variable Speed Limits |
This equipment package provides center monitoring and control of variable speed limits systems. It monitors data on traffic and environmental conditions collected from sensors along the roadway. Based on the measured data, it calculates and sets suitable speed limits usually by lane. It controls equipment that posts the current speed limits and displays additional information such as basic safety rules and current traffic information to drivers. |
Arizona Department of Transportation |
ADOT TOC |
Collect Traffic Surveillance |
This equipment package remotely monitors and controls traffic sensors and surveillance (e.g., CCTV) equipment, and collects, processes and stores the collected traffic data. Current traffic information and other real-time transportation information is also collected from other centers. The collected information is provided to traffic operations personnel and made available to other centers. |
Arizona Department of Transportation |
ADOT TOC |
TMC Traffic Information Dissemination |
This equipment package disseminates traffic and road conditions, closure and detour information, incident information, driver advisories, and other traffic-related data to other centers, the media, and driver information systems. It monitors and controls driver information system field equipment including dynamic message signs and highway advisory radio, managing dissemination of driver information through these systems. |
Arizona Department of Transportation |
ADOT TOC |
Traffic Equipment Maintenance |
This equipment package monitors the operational status of field equipment and detects failures. It presents field equipment status to Traffic Operations Personnel and reports failures to the Maintenance and Construction Management Subsystem. The equipment package tracks the repair or replacement of the failed equipment. The entire range of ITS field equipment may be monitored by this equipment package including sensors (traffic, infrastructure, environmental, security, speed, etc.) and devices (highway advisory radio, dynamic message signs, automated roadway treatment systems, barrier and safeguard systems, cameras, traffic signals and override equipment, ramp meters, beacons, security surveillance equipment, etc.). |
Arizona Department of Transportation |
ADOT Vehicle Detectors |
Roadway Basic Surveillance |
This equipment package monitors traffic conditions using fixed equipment such as loop detectors and CCTV cameras. |
Arizona Department of Transportation |
ADOT Vehicle Detectors |
Roadway Equipment Coordination |
This equipment package supports direct communications between field equipment. It includes field elements that control and send data to other field elements. This includes coordination between remote sensors and field devices (e.g., Dynamic Message Signs) and coordination between the field devices themselves (e.g., direct coordination between traffic controllers that are controlling adjacent intersections.). |