Regional ITS Architecture

PS03: SD County Emergency Vehicle Preemption

Need Area Description

This service package provides signal preemption for public safety first responder vehicles using San Diego County roadside and TMC. Both traditional signal preemption systems and new systems based on connected vehicle technology are covered. In more advanced systems, movement of public safety vehicles through the intersection can be facilitated by clearing queues and holding conflicting phases. In addition, this SP also covers the transition back to normal traffic signal operations after providing emergency vehicle preemption.

Need Area Type: Unspecified

Service Package

PS03: County Emergency Vehicle Preemption

Includes Needs

Number	Need
01	Emergency Management needs to be able to request signal preemption from Traffic Operations for a specific emergency vehicle.
02	Emergency Management needs to be able request signal preemption locally for one or more signals the vehicle is approaching so that it may quickly and safely cross the intersections.
03	Traffic Management needs to be able to adjust signal timing to provide signal preemption for an emergency vehicle based upon a request from Emergency Management.
04	Traffic Management needs to be able to support local adjustments to signal timing based upon a local preemption request and transition back to normal traffic signal operations after providing emergency vehicle preemption.