Preemption of Traffic Signals Near RR Grade Crossings (PDF)
Preemption of Traffic Signals Near RR Grade Crossings (PDF)
The Preemption of Traffic Signals Near RR Grade Crossings, 2nd Edition, an ITE Recommended Practice (PDF)

ITE prepared this recommended practice to reflect the current state-of-the-practice and provide the user with a broad overview of key considerations for the preemption of traffic signals near railroad grade crossings. In these locations the railroad signal control equipment and the roadway traffic signal control equipment should be interconnected and normal operation of the traffic signals controlling the intersection should be preempted to operate in a special control mode when trains are approaching. The report is written primarily for an audience of engineers working for public agencies, railroads and public transit agencies engaged in signal design and operational timing.

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