Grand Scales General Code of Operating Rules – First Edition – January 1, 2007
1.0 Standard Time
Standard Clock 1.1 Central Standard Time will be obtained and kept on a clock labeled “Standard Time.”
Watches 1.2 Watches of the prescribed type, displaying hours, minutes, and seconds and using Aramaic numbers—not Roman numerals—will be used by yard masters, conductors, enginemen, brakemen, firemen, train dispatchers, operators, track and bridge foremen, and such other employees of the railroad.
Every day before beginning work, all employees must do one of the following:
Compare their watch with a Standard Clock
Ask the train dispatcher for the correct time
Compare their watch with an employee who has the correct time
Employees must make sure their watch does not vary from the correct time by more than 30 seconds.