Tallahassee Adaptive Traffic Signal Control Project

Project Description: Project for deployment of adaptive signal control by the City of Tallahassee. From the Tallahassee Master Plan, deployments are proposed on US27 & US90.

Project Status: On-going

Project Stakeholders:

• City of Tallahassee

Project Service Packages:

• TM03: Traffic Signal Control (FDOT District 3 – City of Tallahassee)

Project Information Flows:

Information Flow	Source Element	Destination Element	Status
signal control device configuration	Tallahassee Advanced Transportation Management System (TATMS)	City of Tallahassee Field Equipment	Planned
signal control plans	Tallahassee Advanced Transportation Management System (TATMS)	City of Tallahassee Field Equipment	Planned
signal control status	City of Tallahassee Field Equipment	Tallahassee Advanced Transportation Management System (TATMS)	Planned
signal fault data	City of Tallahassee Field Equipment	Tallahassee Advanced Transportation Management System (TATMS)	Planned
signal system configuration	Tallahassee Advanced Transportation Management System (TATMS)	City of Tallahassee Field Equipment	Planned
traffic detector data	City of Tallahassee Field Equipment	Tallahassee Advanced Transportation Management System (TATMS)	Planned

Project Functional Requirements (Element - Functional Object):

• City of Tallahassee Field Equipment - Roadway Basic Surveillance
• 1: The field element shall collect, process, digitize, and send traffic sensor data (speed, volume, and occupancy) to the center for further analysis and storage, under center control.
• 2: The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
• 4: The field element shall return sensor and CCTV system operational status to the controlling center.


• City of Tallahassee Field Equipment - Roadway Signal Control
• 1: The field element shall control traffic signals under center control.
• 4: The field element shall report the current signal control information to the center.
• 5: The field element shall report current preemption status to the center.
• 6: The field element shall return traffic signal controller operational status to the center.
• 7: The field element shall return traffic signal controller fault data to the center.
• 8: The field element shall report current transit priority status to the center.


• City of Tallahassee STMC - TMC Basic Surveillance
• 1: The center shall monitor, analyze, and store traffic sensor data (speed, volume, occupancy) collected from field elements under remote control of the center.
• 2: The center shall monitor, analyze, and distribute traffic images from CCTV systems under remote control of the center.


• City of Tallahassee STMC - TMC Signal Control
• 1: The center shall remotely control traffic signal controllers.
• 3: The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
• 4: The center shall collect traffic signal controller fault data from the field.
• 5: The center shall manage (define, store and modify) control plans to coordinate signalized intersections, to be engaged at the direction of center personnel or according to a daily schedule.
• 6: The center shall implement control plans to coordinate signalized intersections based on data from sensors.
• 7: The center shall manage boundaries of the control sections used within the signal system.
• 8: The center shall maintain traffic signal coordination including synchronizing clocks throughout the system.


• Tallahassee Advanced Transportation Management System (TATMS) - TMC Signal Control
• 1: The center shall remotely control traffic signal controllers.
• 12: The center shall adjust signal timing in respond to traffic and environmental parameters at each intersection in real time and adapts so that the traffic network is optimized using available green time to serve the actual traffic demands while minimizing the environmental impact.
• 6: The center shall implement control plans to coordinate signalized intersections based on data from sensors.
• 8: The center shall maintain traffic signal coordination including synchronizing clocks throughout the system.
• 9: The center shall implement control plans to coordinate signalized intersections based on data from sensors and connected vehicles.

Standards:

• US: NTCIP Signal System Masters - SNMPv3/TLS
• US: NTCIP Traffic Signal - SNMPv3/TLS
• US: NTCIP Transportation Sensors - SNMPv3/TLS

Project Operational Concepts:

Roles and Responsibilities

• City of Tallahassee
• Coordinate emergency traffic signal control with the county EOC/warning points.
• Monitor speed information through City of Tallahassee sensors and send speed information to the City’s transportation management center (TMC) and the Florida Highway Patrol (FHP) for enforcement.
• Obtain traffic images and traffic flow data from the City of Tallahassee field equipment; county and local field equipment; and FDOT District 3 field equipment. Direct operational control is maintained over the City of Tallahassee field equipment only.
• Operate traffic signal systems, including CCTVs, signals, and sensors, for the City of Tallahassee. Utilize signal systems owned by county and local agencies, as well as FDOT District 3.
• Provide emergency signal preemption for county and local fire/EMS providers.
• Provide transit signal priority for StarMetro transit vehicles using roadside devices.