Interface: Municipal Field Devices - Local Fire and EMS Vehicles
![Municipal Field Devices to Local Fire and EMS Vehicles Interface Diagram](../../images/ifs/if17-19.png)
Information Flow Definitions
local signal preemption request (Existing) Selected Comm Solution
Direct control signal or message to a signalized intersection that results in preemption of the current control plan and grants right–of–way to the requesting vehicle.