Physical Object: ITS Roadway Equipment

Roadway Signal Preemption

Overview

'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.

This functional object is included in the "ITS Roadway Equipment" physical object.

This functional object is included in the following service packages:

This functional object is mapped to the following Functional View PSpecs:

Requirements

# 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.

Standards

The following table lists the standards associated with the functional object itself (as opposed to standards associated with an interface).

Name Title
ITE ATC Advanced Transportation Controller
ITE ATC API Application Programming Interface Standard for the Advanced Transportation Controller
ITE ATC Model 2070 Model 2070 Controller Standard
NEMA TS2 Traffic Controller Assemblies Traffic Controller Assemblies with NTCIP Requirements