Seminole Countywide SPaT Deployment (Connected Vehicle Pilot on SR 434)

Project Description: This project would deploy Signal Phasing and Timing (SPaT) at intersections in Seminole County. SPaT would allow communication between connected vehicles and traffic signal equipment in Seminole County. These deployments could allow drivers to anticipate changes in traffic signals and avoid unnecessary delays, reduce emissions, and increase traffic safety.

Project Status: Planned

Project Stakeholders:

• Counties and Cities
• FDOT CO
• Seminole County
• Travelers

Project Service Packages:

• TM04: Connected Vehicle Traffic Signal System (Seminole County SPAT Deployment)
• SU04: Map Management (Seminole Countywide SPaT Deployment Project)
• SU08: Security and Credentials Management (Seminole Countywide SPaT Deployment Project)
• TI01: Broadcast Traveler Information (Seminole Countywide SPaT Deployment (Connected Vehicle Pilot on SR 434))

Project Information Flows:

Information Flow	Source Element	Destination Element	Status
device enrollment information	Seminole County Field Equipment	FDOT SCMS	Planned
device enrollment information	Vehicle	FDOT SCMS	Planned
enrollment credentials	FDOT SCMS	Seminole County Field Equipment	Planned
enrollment credentials	FDOT SCMS	Vehicle	Planned
incident information for public	Seminole County TMC	County and City Public Information System	Planned
intersection geometry	CAV-ITS Map Update System	Seminole County Field Equipment	Planned
intersection geometry	CAV-ITS Map Update System	Seminole County TMC	Planned
intersection geometry	CAV-ITS Map Update System	Vehicle	Planned
intersection geometry	Seminole County Field Equipment	Vehicle	Planned
intersection infringement info	Vehicle	Seminole County Field Equipment	Planned
intersection safety warning	Seminole County Field Equipment	Vehicle	Planned
intersection status	Seminole County Field Equipment	Vehicle	Planned
map update notification	Seminole County TMC	CAV-ITS Map Update System	Planned
map updates	CAV-ITS Map Update System	Seminole County Field Equipment	Planned
map updates	CAV-ITS Map Update System	Seminole County TMC	Planned
map updates	CAV-ITS Map Update System	Vehicle	Planned
misbehavior report	Seminole County Field Equipment	FDOT SCMS	Planned
misbehavior report	Vehicle	FDOT SCMS	Planned
road network conditions	Seminole County TMC	County and City Public Information System	Planned
security credential revocations	FDOT SCMS	Seminole County Field Equipment	Planned
security credential revocations	FDOT SCMS	Vehicle	Planned
security credentials	FDOT SCMS	Seminole County Field Equipment	Planned
security credentials	FDOT SCMS	Vehicle	Planned
security policy and networking information	FDOT SCMS	Seminole County Field Equipment	Planned
security policy and networking information	FDOT SCMS	Vehicle	Planned
vehicle location and motion	Vehicle	Seminole County Field Equipment	Planned
vehicle location and motion for surveillance	Vehicle	Seminole County Field Equipment	Planned
vehicle signage data	Seminole County Field Equipment	Vehicle	Planned

Project Functional Requirements (Element - Functional Object):

• CAV-ITS Map Update System - Map Management
• 1: The Center shall collect Vehicle location information from Vehicles.
• 4: The Center shall collect updates to intersection geometry from other Centers.
• 5: The Center shall provide basemap updates to other Centers.
• 7: The Center shall collect vehicle location information from the Connected Vehicle Roadside Equipment.


• County and City Public Information System - TIC Connected Vehicle Traveler Info Distribution
• 1: The center shall collect traveler information for distribution including traffic and road conditions, incident information, maintenance and construction information, event information, transit information, parking information, and weather information.


• County and City Public Information System - TIC Data Collection
• 1: The center shall collect, process, and store traffic and highway condition information, including incident information, detours and road closures, event information, recommended routes, and current speeds on specific routes.


• County and City Public Information System - TIC Traveler Information Broadcast
• 1: The center shall disseminate traffic and highway condition information to travelers, including incident information, detours and road closures, event information, recommended routes, and current speeds on specific routes.
• 7: The center shall disseminate event information to travelers.
• 9: The center shall provide traffic and incident data to the media.


• FDOT SCMS - CCMS Authorization
• 1: The Center shall generate credential identifiers using facilities that are independently owned and operated from one another.
• 2: The Center shall assign two or more non-unique identifiers, that when combined are unique, to each credential it distributes.
• 3: The Center shall verify information received in pseudonym requests.
• 4: The Center shall coordinate the distribution of credentials with other Centers.
• 5: The Center shall store credential identifiers using facilities that are independently owned and operated from one another.
• 6: The Center shall provide Vehicle pseudonymous credentials in response to valid Vehicle pseudonym requests.


• FDOT SCMS - CCMS Enrollment
• 1: The Center shall provide enrollment credentials in response to valid enrollment requests.
• 2: The Center shall coordinate the distribution of enrollment credentials with other Centers.
• 3: The Center shall verify information received in enrollment requests.


• FDOT SCMS - CCMS Provisioning
• 1: The Center shall provide security and regulatory policy information to ITS Objects.
• 2: The Center shall provide its credentials information to ITS Objects.
• 3: The Center shall provide the operator with mechanisms for monitoring the status of all credential-granting activities without compromising any other requirement.


• Seminole 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.


• Seminole County 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.


• Seminole County 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.


• Seminole County Field Equipment - RSE Intersection Safety
• 3: The roadway equipment shall collect vehicle path information sent by a vehicle.
• 5: The roadway equipment shall send to Connected Vehicles intersection signal timing information in order for the vehicle to determine if it will safely cross the intersection given its current speed and location.
• 6: The roadway equipment shall send to connected vehicles a warning if an intersection violation appears to be imminent.
• 7: The field element shall collect current conflict monitor and intersection control data from the traffic signal controller.


• Seminole County TMC - TMC Intersection Safety
• 1: The center shall provide current intersection safety status information.


• Seminole County TMC - 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.


• Vehicle - 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.
• 2: Vehicle shall provide data describing the vehicle's location in three dimensions, heading, speed, acceleration, braking status, and size.
• 3: The vehicle shall receive intersection signal timing information in order for the vehicle to determine if it will safely cross the intersection given its current location and speed.
• 4: The vehicle shall be capable of providing warnings to the driver based upon information received regarding pedestrians, cyclists, and other non-motorized users that are sharing the roadway with the vehicle.
• 5: The vehicle shall receive warning from the infrastructure if an intersection violation appears to be imminent.

Standards:

• (None-Data) - Secure Internet (ITS)
• (None-Data) - Secure Wireless Internet (ITS)
• US: Device enrollment - Secure Internet (ITS)
• US: Misbehavior reporting - Secure Internet (ITS)
• US: SAE Basic Safety Messages - WAVE WSMP
• US: SAE Other J2735 - Secure Internet (ITS)
• US: SAE Other J2735 - Secure Wireless Internet (ITS)
• US: SAE Other J2735 - WAVE WSMP
• US: SAE Signal Control Messages - WAVE WSMP
• US: SAE Traveler Info - WAVE WSMP
• US: Security Credentials - Secure Internet (ITS)
• US: TMDD - NTCIP Messaging

Project Operational Concepts:

Roles and Responsibilities

• Counties and Cities
• Coordinate emergency plans, incident responses, and resources with the county EOC/warning points.
• Coordinate evacuation and reentry plans with the county EOC/warning points.
• Provide maintenance and construction information to the traveling public using portable DMS devices.
• Provide traffic information to travelers using private companies; the county and city public information systems; and the media.
• Receive AMBER Alerts and other wide area alert information from FDLE.


• Seminole County
• Coordinate emergency plans, incident responses, and resources with the county EOC/warning points.
• Coordinate evacuation and reentry plans with the county EOC/warning points.
• Provide intersection maps and updates.
• Provide security services for Seminole County SPaT capability.
• Provide SPaT capability on Seminole County surface streets.
• Provide traffic information in a coordination effort to the Florida 511
• Provide traffic information to local transit operations, including ACCESS LYNX paratransit and LYNX operations.
• Provide traffic information to travelers using private companies; county and city public information systems; and the media.
• Provide traffic information to travelers using Seminole County DMS devices.
• Provide travelers with Signal Phase and Timing (SPaT) information using connected V2I roadside equipment.
• Receive AMBER Alerts and other wide area alert information from FDLE.