FDOT District 6 Keys COAST (Signal Priority / Preemption)

Project Description: The Florida Keys Connecting Overseas to Advance Safe Travel (KeysCOAST) project implements emerging safety and mobility solutions on US 1 (from MM 0.0 to MM 112.5) in Monroe County. Keys COAST will be deployed to make this corridor future ready to serve the existing evacuation route to/from the Florida Keys. This project will be a multimodal corridor management program promoting safety and mobility for all road users. A primary goal of this project is to use emerging technologies to create a safer and more efficient corridor that is prepared to accommodate the latest technology the future holds. The project concept includes roadside units (RSU) capable of Dedicated Short–Range Communications (DSRC) and cellular communications, on–board units (OBU), smartphone on–board units, customized software applications, a cloud-based information dissemination platform, Automated Traffic Signal Performance Measures (ATSPM), and cyclist and pedestrian safety applications. These project components will provide FDOT District 6 the ability to perform active arterial management strategies through real-time assessments along US–1. The project is broken into smaller phases or component projects which will deliver the various services of the overall concept.

The FDOT District 6 Keys COAST (Signal Priority / Preemption) project will implement Transit Signal Priority, Emergency Vehicle Preemption, and Freight Signal Priority services using Connected Vehicle technology.

Project Status: Planned

Project Stakeholders:

• County Public Safety Agencies
• FDOT CO
• FDOT District 6
• Local Agencies
• Local Transit Operators
• Private Commercial Vehicle and Fleet Operators

Project Service Packages:

• CVO06: Freight Signal Priority (Keys COAST)
• SU04: Map Management (CAV-ITS)
• PT09: Transit Signal Priority (Keys COAST)
• PS03: Emergency Vehicle Preemption (Keys COAST)
• SU08: Security and Credentials Management (FDOT District 6 Keys COAST (Signal Priority / Preemption))
• SU09: Device Certification and Enrollment (FDOT District 6 Keys COAST (Signal Priority / Preemption))

Project Information Flows:

Information Flow	Source Element	Destination Element	Status
device enrollment information	Commercial Vehicle	FDOT SCMS	Planned
device enrollment information	County Fire EMS/Rescue Vehicles	FDOT SCMS	Planned
device enrollment information	County Sheriffs Vehicles	FDOT SCMS	Planned
device enrollment information	FDOT District 6 CAV Field Equipment	FDOT SCMS	Planned
device enrollment information	Local Fire/EMS Vehicles	FDOT SCMS	Planned
device enrollment information	Local Police Vehicles	FDOT SCMS	Planned
enrollment credentials	FDOT SCMS	Commercial Vehicle	Planned
enrollment credentials	FDOT SCMS	County Fire EMS/Rescue Vehicles	Planned
enrollment credentials	FDOT SCMS	County Sheriffs Vehicles	Planned
enrollment credentials	FDOT SCMS	FDOT District 6 CAV Field Equipment	Planned
enrollment credentials	FDOT SCMS	Local Fire/EMS Vehicles	Planned
enrollment credentials	FDOT SCMS	Local Police Vehicles	Planned
intersection control status	FDOT District 6 Signal Field Equipment	FDOT District 6 CAV Field Equipment	Planned
intersection geometry	FDOT District 4 CAV Field Equipment	Local Police Vehicles	Planned
intersection geometry	FDOT District 6 CAV Field Equipment	Commercial Vehicle	Planned
intersection geometry	FDOT District 6 CAV Field Equipment	County Fire EMS/Rescue Vehicles	Planned
intersection geometry	FDOT District 6 CAV Field Equipment	County Sheriffs Vehicles	Planned
intersection geometry	FDOT District 6 CAV Field Equipment	Local Fire/EMS Vehicles	Planned
intersection geometry	FDOT District 6 CAV Field Equipment	Local Transit Operators Vehicles	Planned
intersection status	FDOT District 4 CAV Field Equipment	Local Police Vehicles	Planned
intersection status	FDOT District 6 CAV Field Equipment	Commercial Vehicle	Planned
intersection status	FDOT District 6 CAV Field Equipment	County Fire EMS/Rescue Vehicles	Planned
intersection status	FDOT District 6 CAV Field Equipment	County Sheriffs Vehicles	Planned
intersection status	FDOT District 6 CAV Field Equipment	Local Fire/EMS Vehicles	Planned
intersection status	FDOT District 6 CAV Field Equipment	Local Transit Operators Vehicles	Planned
local signal preemption request	County Fire EMS/Rescue Vehicles	FDOT District 6 CAV Field Equipment	Planned
local signal preemption request	County Sheriffs Vehicles	FDOT District 6 CAV Field Equipment	Planned
local signal preemption request	Local Fire/EMS Vehicles	FDOT District 6 CAV Field Equipment	Planned
local signal preemption request	Local Police Vehicles	FDOT District 4 CAV Field Equipment	Planned
local signal priority request	Commercial Vehicle	FDOT District 6 CAV Field Equipment	Planned
local signal priority request	Local Transit Operators Vehicles	FDOT District 6 CAV Field Equipment	Planned
map updates	CAV-ITS Map Update System	FDOT District 6 CAV Field Equipment	Planned
misbehavior report	Commercial Vehicle	FDOT SCMS	Planned
misbehavior report	County Fire EMS/Rescue Vehicles	FDOT SCMS	Planned
misbehavior report	County Sheriffs Vehicles	FDOT SCMS	Planned
misbehavior report	FDOT District 6 CAV Field Equipment	FDOT SCMS	Planned
misbehavior report	Local Fire/EMS Vehicles	FDOT SCMS	Planned
misbehavior report	Local Police Vehicles	FDOT SCMS	Planned
parking facility geometry	CAV-ITS Map Update System	FDOT District 6 CAV Field Equipment	Planned
security credential revocations	FDOT SCMS	Commercial Vehicle	Planned
security credential revocations	FDOT SCMS	County Fire EMS/Rescue Vehicles	Planned
security credential revocations	FDOT SCMS	County Sheriffs Vehicles	Planned
security credential revocations	FDOT SCMS	FDOT District 6 CAV Field Equipment	Planned
security credential revocations	FDOT SCMS	Local Fire/EMS Vehicles	Planned
security credential revocations	FDOT SCMS	Local Police Vehicles	Planned
security credentials	FDOT SCMS	Commercial Vehicle	Planned
security credentials	FDOT SCMS	County Fire EMS/Rescue Vehicles	Planned
security credentials	FDOT SCMS	County Sheriffs Vehicles	Planned
security credentials	FDOT SCMS	FDOT District 6 CAV Field Equipment	Planned
security policy and networking information	FDOT SCMS	Commercial Vehicle	Planned
security policy and networking information	FDOT SCMS	County Fire EMS/Rescue Vehicles	Planned
security policy and networking information	FDOT SCMS	County Sheriffs Vehicles	Planned
security policy and networking information	FDOT SCMS	FDOT District 6 CAV Field Equipment	Planned
security policy and networking information	FDOT SCMS	Local Fire/EMS Vehicles	Planned
security policy and networking information	FDOT SCMS	Local Police Vehicles	Planned
signal priority service request	FDOT District 6 CAV Field Equipment	FDOT District 6 Signal Field Equipment	Planned
signal priority status	FDOT District 4 CAV Field Equipment	Local Police Vehicles	Planned
signal priority status	FDOT District 6 CAV Field Equipment	Commercial Vehicle	Planned
signal priority status	FDOT District 6 CAV Field Equipment	County Fire EMS/Rescue Vehicles	Planned
signal priority status	FDOT District 6 CAV Field Equipment	County Sheriffs Vehicles	Planned
signal priority status	FDOT District 6 CAV Field Equipment	Local Fire/EMS Vehicles	Planned
signal priority status	FDOT District 6 CAV Field Equipment	Local Transit Operators Vehicles	Planned
vehicle location and motion	Commercial Vehicle	FDOT District 6 CAV Field Equipment	Planned
vehicle location and motion	County Fire EMS/Rescue Vehicles	FDOT District 6 CAV Field Equipment	Planned
vehicle location and motion	County Sheriffs Vehicles	FDOT District 6 CAV Field Equipment	Planned
vehicle location and motion	Local Fire/EMS Vehicles	FDOT District 6 CAV Field Equipment	Planned
vehicle location and motion	Local Police Vehicles	FDOT District 4 CAV Field Equipment	Planned
vehicle location and motion	Local Transit Operators Vehicles	FDOT District 6 CAV Field Equipment	Planned
vehicle location data for mapping	FDOT District 6 CAV Field Equipment	CAV-ITS Map Update System	Planned

Project Functional Requirements (Element - Functional Object):

• CAV-ITS Map Update System - Map Management
• 18: The Center shall provide intersection geometry updates to Connected Vehicle Roadside Equipment.


• Commercial Vehicle - CV On-Board Signal Priority
• 2: The commercial vehicle shall provide vehicle location and motion information to local connected vehicle equipment near signalized intersections.


• Commercial Vehicle - ITS Security Support
• 1: The ITS Object shall obtain security policy information from the Cooperative Intelligent Transportation System Credentials Management System (CCMS).
• 2: The ITS Object shall request enrollment credentials from the CCMS.
• 3: The ITS Object shall obtain the CCMS' trust credentials.


• County Fire EMS/Rescue Vehicles - EV On-Board En Route Support
• 5: The emergency vehicle shall send requests to traffic signal control equipment at the roadside to preempt the signal.


• County Fire EMS/Rescue Vehicles - ITS Security Support
• 1: The ITS Object shall obtain security policy information from the Cooperative Intelligent Transportation System Credentials Management System (CCMS).
• 2: The ITS Object shall request enrollment credentials from the CCMS.
• 3: The ITS Object shall obtain the CCMS' trust credentials.


• County Sheriffs Vehicles - EV On-Board En Route Support
• 5: The emergency vehicle shall send requests to traffic signal control equipment at the roadside to preempt the signal.


• County Sheriffs Vehicles - ITS Security Support
• 1: The ITS Object shall obtain security policy information from the Cooperative Intelligent Transportation System Credentials Management System (CCMS).
• 2: The ITS Object shall request enrollment credentials from the CCMS.
• 3: The ITS Object shall obtain the CCMS' trust credentials.


• FDOT District 6 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).
• 2: The ITS Object shall request enrollment credentials from the CCMS.
• 3: The ITS Object shall obtain the CCMS' trust credentials.


• FDOT District 6 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.
• 3: The field element shall send the infrastructure application status to the operations center.
• 4: The field element shall receive signal prioity requests from commercial vehicles and forward to the traffic signal controller.
• 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.


• FDOT District 6 CAV Field Equipment - RSE Map Management
• 10: The field element shall provide intersection geometry updates to proximate Vehicles.
• 12: The field element shall provide roadway geometry updates to proximate Vehicles.


• FDOT District 6 Signal 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.
• 11: The field element shall receive request for commercial vehicle signal priority.
• 12: The field element shall report current commercial vehicle priority status to the center.
• 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.
• 14: The field element shall provide data to the Connected Vehicle Roadside Equipment.
• 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.
• 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.


• FDOT District 6 Signal Field Equipment - Roadway Signal Preemption
• 1: The field element shall respond to signal preemption requests from emergency vehicles.
• 2: The field element shall inform the controlling center when preemption requests have been received.
• 3: The field element shall send the preemption request to the signal controller to immediately preempt the signal for the requested direction.


• FDOT SCMS - CCMS Authorization
• 6: The Center shall provide Vehicle pseudonymous credentials in response to valid Vehicle pseudonym requests.
• 8: The Center shall provide Center pseudonymous credentials in response to valid Center pseudonym requests.
• 9: The Center shall provide Connected Vehicle Roadside Equipment pseudonymous credentials in response to valid Connected Vehicle Roadside Equipment pseudonym requests.


• FDOT SCMS - CCMS Enrollment
• 1: The Center shall provide enrollment credentials in response to valid enrollment requests.


• FDOT SCMS - CCMS Misbehavior Reporting and Action
• 1: The Center shall accept misbehavior reports from ITS Objects.


• 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.


• FDOT SCMS - CCMS Revocation
• 1: The Center shall place certificates on the revocation list of those certificates that are associated with misbehavior.


• FDOT SCMS - ITS Security Support
• 1: The ITS Object shall obtain security policy information from the Cooperative Intelligent Transportation System Credentials Management System (CCMS).
• 2: The ITS Object shall request enrollment credentials from the CCMS.
• 3: The ITS Object shall obtain the CCMS' trust credentials.


• Local Fire/EMS Vehicles - EV On-Board En Route Support
• 5: The emergency vehicle shall send requests to traffic signal control equipment at the roadside to preempt the signal.


• Local Fire/EMS Vehicles - 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.


• Local Police Vehicles - EV On-Board En Route Support
• 5: The emergency vehicle shall send requests to traffic signal control equipment at the roadside to preempt the signal.


• Local Police Vehicles - ITS Security Support
• 1: The ITS Object shall obtain security policy information from the Cooperative Intelligent Transportation System Credentials Management System (CCMS).
• 2: The ITS Object shall request enrollment credentials from the CCMS.
• 3: The ITS Object shall obtain the CCMS' trust credentials.


• Local Transit Operators Vehicles - ITS Security Support
• 1: The ITS Object shall obtain security policy information from the Cooperative Intelligent Transportation System Credentials Management System (CCMS).
• 2: The ITS Object shall request enrollment credentials from the CCMS.
• 3: The ITS Object shall obtain the CCMS' trust credentials.


• Local Transit Operators Vehicles - Transit Vehicle Signal Priority
• 1: The transit vehicle shall determine the schedule deviation and estimated times of arrival (ETA) at transit stops.
• 2: The transit vehicle shall send priority requests to traffic signal controllers at intersections, pedestrian crossings, and multimodal crossings on the roads (surface streets) and freeway (ramp controls) network that enable a transit vehicle schedule deviation to be corrected.
• 4: The transit vehicle shall prevent a priority request from being sent when the transit vehicle cannot use the priority (e.g., when the transit vehicle makes a passenger stop on the approach to an intersection).

Standards:

• (None-Data) - Secure Internet (ITS)
• US: Device enrollment - Secure Internet (ITS)
• US: Misbehavior reporting - Secure Internet (ITS)
• US: NTCIP Signal Priority - SNMPv3/TLS
• US: NTCIP Traffic Signal - SNMPv3/TLS
• US: SAE Basic Safety Messages - WAVE WSMP
• US: SAE LTE-V2X BSM - LTE-V2X WSMP
• US: SAE Signal Preemption - LTE-V2X TCP
• US: SAE Signal Preemption - WAVE TCP
• US: Security Credentials - Secure Internet (ITS)

Project Operational Concepts:

Roles and Responsibilities

• FDOT District 6
• Collect traffic data from sensors that are part of the traffic signal system.
• Operate traffic signal systems on state roadways.


• Local Transit Operators
• Install and operate invehicle CAV equipment.


• Private Commercial Vehicle and Fleet Operators
• Install and operate invehicle CAV equipment.


• FDOT CO
• Provide SCMS services.


• County Public Safety Agencies
• Install and operate invehicle CAV equipment.