What is the maximum authorized speed for a train on a siding?

The maximum authorized speed for a train on a siding is classified as restricted speed. This designation is crucial for maintaining safety in areas where there may be other trains, equipment, or personnel present. Restricted speed allows a train to proceed at a speed that enables the crew to stop short of any obstruction, regardless of the conditions on or near the siding, ensuring that unexpected situations, such as encountering a stopped train or maintenance of way equipment, can be handled safely.

In contrast to normal speed, which might imply a higher, less cautious rate of travel, restricted speed requires a lower speed to ensure full control of the train. High speed and double speed are not applicable in this context, as they exceed the safety limits necessary for siding operations, which focus on precaution and prevention of accidents in potentially hazardous environments. By implementing a maximum speed of restricted speed on sidings, the LIRR aims to enhance the safety and reliability of its operations, allowing for a safe passage in areas where the normal rules of speed would not be appropriate.