What is the appropriate speed when operating under the six rules of restricted speed?

Operating under the six rules of restricted speed mandates that a train must proceed at a speed that allows it to stop within half the range of vision, and it should be at a speed that is safe given the conditions of the track, signaling, and proximity to work zones or other trains. The correct choice specifies a maximum of 10 MPH or less, which is in line with typical industry guidelines for restricted speed situations.

This lower speed allows the train operator enough time to react to any unexpected obstructions or situations that may arise, ensuring the safety of both personnel and equipment. At this speed, operators can also better adhere to any local instructions or signage, which often accompany restricted speed regulations.

The importance of adhering to a maximum speed of 10 MPH or less cannot be overstated, as exceeding this speed in restricted scenarios could compromise safety protocols designed to protect the train and its environment, particularly in areas where visibility may be limited or when approaching intersections and work zones.