When any train makes an unscheduled stop (whether at a station or between stations, or whether such stop be caused by accident to the train, or by signal, or in any other way), the train shall be protected as follows:
a. In the night-time the flagmen shall immediately place a lighted red fusee in center of track about five hundred feet behind the rear of train.
He shall then go back as rapidly as possible with red and white lanterns to a point less than three-fourths of a mile (twenty-four telegraph poles) distant from rear of train and until he reaches a point where the danger signal can be seen not less than one-fourth of a mile (eight telegraph poles) by the engineman of any approaching train. When the character of the road or weather makes it necessary the flagman shall go a greater distance with signals, so as to insure absolute safety.
b. In the daytime he shall carry a red flag and proceed to a like point.
c. When he reaches such point, whether in the night-time or daytime, he shall at once place one torpedo on the rail on the engineman's side and shall remain at that place until recalled. If a train approaches he shall flag it and remain until the train stops.
d. When recalled, if no train is approaching, he shall place a second torpedo on the rail 200 feet nearer his train and return with all possible dispatch.
SCHEDULED STOPS LONGER THAN USUAL.
e. When any train makes a scheduled stop at any station and occupies the main track longer than usual at that station, whether on account of baggage, passengers, or for any other reason whatever, the flagman must protect his train in the same manner.
STOPPAGE BY PRECEDING TRAINS.
f. When any train has been stopped by a preceding train in the manner above mentioned, the flagman of the last train must protect his train in the same manner.