What is a consequence of not following block limit procedures?

Not adhering to block limit procedures significantly heightens the risk of collision or derailment. These procedures are crucial for maintaining safe distances between trains and ensuring that they can operate without the risk of coming into conflict with one another. Block limits are established to protect both the trains on the tracks and the safety of passengers and crew, as they define safe operating zones and prevent multiple trains from occupying the same track segment at the same time.

When block limit procedures are overlooked, it can lead to situations where trains are allowed to enter blocks that are not clear or where they may be conflicting with other trains' movements. This lack of proper spacing and control can result in serious accidents, including collisions with other trains or derailments due to unsafe speed or track conditions. Thus, following block limit procedures is essential for safe and reliable train operations.