What does the Locomotive Speed Limiter (LSL) do?

The Locomotive Speed Limiter (LSL) is designed to enhance safety by closely monitoring the speed of a train and initiating a penalty brake application if the train exceeds predetermined speed thresholds. This functionality is crucial in preventing excessive speed, which could lead to accidents or derailments.

By utilizing speed profiling, the LSL ensures that trains adhere to specific speed limits set for various sections of the track, responding dynamically to changes in those limits. When the speed limit is exceeded, the system triggers a penalty brake application, prompting the train to reduce speed and return to compliant operating conditions. This automatic intervention is vital for maintaining safety protocols and ensuring adherence to regulatory speed limits on the rail network.

This mechanism is distinct from options that suggest manual operation, display capabilities, or data transmission to control centers, as those functions are not the primary role of the LSL. The primary focus of the LSL is the active monitoring and management of train speed to enhance safety and operational efficiency.