Roadway Signal Preemption Functional Area


'Roadway Signal Preemption' includes the field elements that receive signal preemption requests from emergency vehicles approaching a signalized intersection and overrides the current operation of the traffic signals to stop conflicting traffic and grant right–of–way to the approaching vehicle.

Included In

Cincinnati Field Equipment
KYTC District 6 Field Equipment
ODOT Traffic Signal Roadway Equipment
Hamilton County Field Equipment
City and County Field Equipment
ODOT District 8 Field Equipment
INDOT Traffic Signal Roadway Equipment
KYTC Traffic Signal Roadway Equipment
INDOT Field Equipment

Functional Requirements

01The field element shall respond to signal preemption requests from emergency vehicles.
02The field element shall inform the controlling center when preemption requests have been received.
03The field element shall send the preemption request to the signal controller to immediately preempt the signal for the requested direction.
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