FDOT District 7 US 19 Signal Phase and Timing (SPaT)
Project Description: In this project, FDOT District 7, in partnership with Pinellas County, will deploy 23 Signal Phasing and Timing (SPaT) data capable signals along a portion of US 19 corridor. In 2023, the project has been expanded to include state and county systems. Eleven (11) traffic signals are at–grade intersections on US 19 and 12 signals are along frontage roads. This project adds to two other FDOT initiatives with the AASHTO SPaT Challenge: Tallahassee US 90 and Gainesville Trapezium.
Project Status: Planned
Project Stakeholders:
Interconnect and Flow
Diagrams
:
Project Information Flows:
Project Functional Requirements (Element - Functional Object):
-
FDOT District 7 CAV Field Equipment - ITS Management Support
-
1: The ITS Object shall provide its network address, service offerings and metrics characterizing those services to vehicles within the broadcast range of the ITS Object's short range communications equipment.
-
2: The ITS Object shall provide its network address, service offerings and metrics characterizing those services to the Object Registration and Discovery Service.
-
3: The ITS Object shall obtain network addresses from the Object Registration and Discovery Service.
-
4: The ITS Object shall make network address information available to onboard applications.
-
5: The ITS Object shall provide its configuration and operational status information to the Service Monitor
-
6: The ITS Object shall acquire regulatory information relevant to the operation of the ITS Object from the CCMS.
-
FDOT District 7 CAV Field Equipment - ITS Security Support
-
1: The ITS Object shall obtain security policy information from the Cooperative Intelligent Transportation System Credentials Management System (CCMS).
-
10: The ITS Object shall maintain cryptographic secret information so that those secrets are accessible only to ITS Security Support, and not to any other Functional Object.
-
11: The ITS Object shall request pseudonymous credentials from the CCMS.
-
12: The ITS Object shall provide messages (that it receives) that indicate potential misbehavior/malfunction to the CCMS.
-
13: The ITS Object shall request permissions from the Center that manages permissions requests.
-
2: The ITS Object shall request enrollment credentials from the CCMS.
-
3: The ITS Object shall obtain the CCMS' trust credentials.
-
4: The ITS Object shall provide a mechanism for on-board applications to digitally sign messages using keys secured by the CCMS' trust authority.
-
5: The ITS Object shall provide a mechanism for on-board applications to authenticate messages secured by the CCMS' trust authority.
-
6: The ITS Object shall provide a mechanism for on-board applications to encrypt messages using keys secured by the CCMS' trust authority.
-
7: The ITS Object shall provide a mechanism for on-board applications to decrypt messages using keys secured by the CCMS' trust authority.
-
8: The ITS Object shall obtain a list of revoked credentials from the CCMS.
-
9: The ITS Object shall make the list of revoked credentials available to on-board applications.
-
FDOT District 7 CAV Field Equipment - RSE Device Management
-
1: The field element shall monitor the operational status (state of the device, configuration, and fault data) of connected sensors (such as traffic, infrastructure, environmental, security, speed) and devices (such as highway advisory radio, dynamic message signs, automated roadway treatment systems, barrier and safeguard systems, cameras, traffic signals, ramp meters, short range communications equipment, security surveillance equipment).
-
10: The field element shall implement configuration commands received from authorized Field Support Equipment.
-
2: The field element shall send operational status of connected field equipment to the maintenance center.
-
3: The field element shall send collected fault data to the maintenance center for repair.
-
4: The field element shall include a local interface that provides operational status and fault data for connected field equipment to field personnel.
-
5: The field element shall include a local interface that allows field personnel to command diagnostic tests on connected field equipment.
-
6: The field element shall provide operational status information to the Service Monitor.
-
7: The field element shall implement configuration commands received from an authorized Center.
-
8: The field element shall implement operational status commands received from an authorized Center.
-
9: The field element shall implement operational status commands received from authorized Field Support Equipment.
-
FDOT District 7 CAV Field Equipment - RSE Intersection Safety
-
6: The roadway equipment shall send to connected vehicles a warning if an intersection violation appears to be imminent.
-
FDOT District 7 CAV Field Equipment - RSE Map Management
-
1: The field element shall collect broadcasted vehicle location and motion information.
-
10: The field element shall provide intersection geometry updates to proximate Vehicles.
-
11: The field element shall provide parking facility geometry information to proximate Personal devices.
-
12: The field element shall provide roadway geometry updates to proximate Vehicles.
-
2: The field element shall aggregate vehicle location data.
-
3: The field element shall provide roadway geometry update information to proximate Vehicles.
-
5: The field element shall provide intersection geometry update information to proximate Vehicles.
-
7: The field element shall provide intersection geometry update information to proximate Personal devices.
-
8: The field element shall provide vehicle location data to Centers.
-
9: The field element shall provide basemap updates to proximate Vehicles.
-
FDOT District 7 CAV Field Equipment - RSE Traffic Monitoring
-
1: The field element shall communicate with on-board equipment on passing vehicles to collect current vehicle position, speed, and heading and a record of previous events (e.g., starts and stops, link travel times) that can be used to determine current traffic conditions.
-
2: The field element shall aggregate and forward collected probe information to the center.
-
3: The field element shall aggregate and forward collected probe information to other field elements.
-
Pinellas County CAV Field Equipment - RSE Intersection Management
-
1: The field element shall communicate with passing vehicles to provide the current signal phase and timing information for all lanes and approaches at a signalized intersection.
-
2: The field element shall send the request for emergency vehicle preemption to a traffic signal controller that results in preemption of the current control plan and grants right-of-way to the requesting vehicle.
-
5: The field element shall receive transit signal priority requests from transit vehicles and forward to the traffic signal controller
-
6: The field element shall receive emergency vehicle preemption requests from emergency vehicles and forward to the traffic signal controller.
-
7: The field element shall determine when special vehicles requesting preemption or priority at a signal are authorized to do so based on their digital credentials.
-
8: The field element shall send a signal service request to the traffic signal controller when its application status determines the need for a signal change.
-
9: The field element shall collect current signal phase and timing data from the traffic signal controller.
-
Pinellas County CAV Field Equipment - RSE Situation Monitoring
-
1: The field element shall collect traffic-related data including snapshots of measured speed and heading and events including starts and stops, speed changes, and other vehicle control from vehicles.
-
5: The field element shall provide collected vehicle situation and local sensor data to data distribution centers.
-
Pinellas County CAV Field Equipment - RSE Traffic Monitoring
-
1: The field element shall communicate with on-board equipment on passing vehicles to collect current vehicle position, speed, and heading and a record of previous events (e.g., starts and stops, link travel times) that can be used to determine current traffic conditions.
-
Pinellas County Field Equipment - Roadway Basic Surveillance
-
2: The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
-
5: The field element shall return sensor and CCTV system fault data to the controlling center for repair.
-
Pinellas County Field Equipment - Roadway Signal Control
-
1: The field element shall control traffic signals under center control.
-
10: The field element shall receive request for transit vehicle signal priority.
-
13: The field element shall provide to roadside equipment the intersection geometry and signal phase movement information including phase and timing information, alarm status, and priority/preempt status.
-
15: The field element shall receive requests for emergency vehicle signal preemption.
-
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.
-
8: The field element shall report current transit priority status to the center.
-
9: The field element shall report current intersection signal timing information to roadside equipment for transmission to connected vehicles.
-
Pinellas County Traffic Management Center - 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.
-
Pinellas County Traffic Management Center - TMC Signal Control
-
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.
-
4: The center shall collect traffic signal controller fault data from the field.
-
6: The center shall implement control plans to coordinate signalized intersections based on data from sensors.
-
Vehicles - Vehicle Basic Safety Communication
-
2: The vehicle shall provide its location with lane-level accuracy to on-board applications.
-
3: The vehicle shall provide its location with road-level accuracy to on-board applications.
-
Vehicles - Vehicle Control Automation
-
1: The vehicle shall monitor the area behind and in front of the vehicle to determine the proximity of other objects to the vehicle.
-
Vehicles - Vehicle Control Warning
-
1: The vehicle shall monitor the area to the sides of the vehicle to determine the proximity of other objects to the vehicle and if a warning is needed.
-
Vehicles - Vehicle Intersection Warning
-
1: Vehicle shall provide vehicle path information to identify if vehicle is performing an unpermitted movement at an intersection such as a stop sign violation or running a red light.
Standards:
Project Operational Concepts:
Last Updated 8/15/2023
