What is a caution order?
A Caution Order (or caution notice) is a written notice issued by a station master (or other official) to the driver and guard of a train, formally advising them of special conditions and restrictions in effect on the section of track that the train is about to enter. The Caution Order may have instructions on speed restrictions and other special procedures to be followed on account of damage to the tracks, flooding, work on the permanent way or on the electrical equipment, accidents (or reminders of spots where accidents recently occurred), work on or damage to OHE equipment, or unusual situations. A caution order can also be issued to advise the driver and guard of the presence of manually operated or motor trolleys, tower cars, MOW wagons, or other such maintenance or emergency vehicles that have entered the block section ahead. The caution order usually specifies the location of the affected section of track, the temporary speed limits in effect, the locations of caution indicators
