St. Lucie County Fiber Optic Cable Expansion

Project Description: Project that includes the expansion of the facilities in St Lucie County as well as the signalized intersections owned by the FDOT and maintained by St Lucie County.

Project Status: Planned

Project Stakeholders:

• St. Lucie County Public Works

Project Service Packages:

• TM01: Infrastructure-Based Traffic Surveillance (St. Lucie County Public Works Department)
• TM03: Traffic Signal Control (St. Lucie County Public Works Department)

Project Information Flows:

Information Flow	Source Element	Destination Element	Status
right-of-way request notification	St. Lucie County Field Equipment	St. Lucie County Traffic Signal System	Planned
signal control commands	St. Lucie County Traffic Signal System	St. Lucie County Field Equipment	Planned
signal control device configuration	St. Lucie County Traffic Signal System	St. Lucie County Field Equipment	Planned
signal control plans	St. Lucie County Traffic Signal System	St. Lucie County Field Equipment	Planned
signal control status	St. Lucie County Field Equipment	St. Lucie County Traffic Signal System	Planned
signal fault data	St. Lucie County Field Equipment	St. Lucie County Traffic Signal System	Planned
signal system configuration	St. Lucie County Traffic Signal System	St. Lucie County Field Equipment	Planned
traffic detector control	St. Lucie County Traffic Signal System	St. Lucie County Field Equipment	Planned
traffic detector data	St. Lucie County Field Equipment	St. Lucie County Traffic Signal System	Planned
traffic images	St. Lucie County Field Equipment	St. Lucie County Traffic Signal System	Planned
video surveillance control	St. Lucie County Traffic Signal System	St. Lucie County Field Equipment	Planned

Project Functional Requirements (Element - Functional Object):

• St. Lucie County 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.
• 5: The field element shall return sensor and CCTV system fault data to the controlling center for repair.


• St. Lucie County Field Equipment - Roadway Signal Control
• 1: The field element shall control traffic signals under center control.
• 2: The field element shall respond to pedestrian crossing requests by accommodating the pedestrian crossing.
• 3: The field element shall provide the capability to notify the traffic management center of pedestrian calls and pedestrian accommodations.
• 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.


• St. Lucie County Traffic Signal System - 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.
• 4: The center shall distribute road network conditions data (raw or processed) based on collected and analyzed traffic sensor and surveillance data to other centers.
• 5: The center shall respond to control data from center personnel regarding sensor and surveillance data collection, analysis, storage, and distribution.
• 7: The center shall remotely control devices to detect traffic.


• St. Lucie County Traffic Signal System - TMC Signal Control
• 1: The center shall remotely control traffic signal controllers.
• 10: The center shall adjust signal timing in respond to a signal prioritization, signal preemption, pedestrian call, multi-modal crossing activation, or other requests for right-of-way.
• 17: The center shall remotely control devices to detect traffic in the vicinity of traffic signals.
• 2: The center shall accept notifications of pedestrian calls.
• 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.
• 9: The center shall implement control plans to coordinate signalized intersections based on data from sensors and connected vehicles.

Standards:

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

Project Operational Concepts:

Roles and Responsibilities

• St. Lucie County Public Works
• Collect traffic data from the traffic signal system sensors.
• Coordinate HRI signal adjustments.
• Interconnect with City of Port St. Lucie and City of Fort Pierce traffic signal systems.
• Operate traffic signal systems on county-owned arterials, as well as some municipal arterials.
• Provide signal preemption for emergency vehicles.
• Provide signal priority for transit vehicles.