The correct answer is: C. SOR
The Statement of Route (SOR) is a document that is prepared by the train dispatcher and is used to authorize the movement of a train. The SOR includes information such as the train’s route, schedule, and speed restrictions. It also includes information about engineering allowances, loco gain, and traffic gain.
Engineering allowances are made to account for the time it takes to make stops and to slow down for curves and other obstructions. Loco gain is the amount of time that a train can gain by running at a higher speed than the scheduled speed. Traffic gain is the amount of time that a train can gain by running on a track that is not congested.
The SOR is a critical document that ensures the safe and efficient movement of trains. It is important that the SOR is accurate and up-to-date.
The other options are incorrect because they are not documents that are used to authorize the movement of trains.
- SWR stands for Standard Wiring Rules. It is a document that provides guidelines for the installation of electrical wiring in railway systems.
- WTT stands for Wayside Train Timetable. It is a document that provides information about the scheduled times of trains at wayside stations.
- None of these documents include information about engineering allowances, loco gain, and traffic gain.