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United States Department of Transportation United States Department of Transportation

Enhanced Automatic Train Control Braking Algorithm Research and Development

Document Series
Research Results
Federal Railroad Administration
Report Number
RR 20-12
Subject Positive Train Control
Braking, E-ATC, PTC, safety

Transportation Technology Center, Inc., as part of a project sponsored by the Federal Railroad Administration, evaluated the safety and operational performance of the Enhanced Automatic Train Control (E-ATC) braking enforcement algorithm and found it exceeds previously established safety objectives, but also may introduce operational inefficiencies. The evaluation was performed using a simulation methodology over a broad range of operating scenarios and equipment used by railroads deploying the E-ATC system.

Last updated: Tuesday, August 18, 2020