signal_preemption_override

This data flow is sent to the Select Strategy function to indicate that a roadside controller has been preempted by a request from the Manage Emergency services function. This will be at the controller for a particular intersection, pedestrian crossing, or highway entrance ramp. The data is sent directly from the signal as an override function rather than a signal malfunction.

Sub Data Flows

• Primitive Element

Parent Data Flows

• None

Associated PSpecs/Terminators

• 1.2.7.1 - Process Indicator Output Data for Roads
• 1.2.1 - Select Strategy

Parent Information Flows

• right-of-way request notification