Roadway Signal Preemption Functional Area
Description
'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
Functional Requirements
| ID | Requirement |
|---|---|
| 01 | The field element shall respond to signal preemption requests from emergency vehicles. |
| 02 | The field element shall inform the controlling center when preemption requests have been received. |
| 03 | The field element shall send the preemption request to the signal controller to immediately preempt the signal for the requested direction. |