Interlocking Rules

601. Application

A movement will be governed by interlocking rules within interlocking limits. Interlocking signal indications govern the use of the routes within interlocking limits. Instructions may be issued by a signalman when necessary.

602. Proper Signal Indications Required

  • (a) Except in case of emergency, radio or hand signals must not be used when the proper indication can be displayed by the interlocking signals.

Forms of GBO

The following examples of GBO will be used where applicable. Times, mileages and speeds shown in MPH will be in numbers only.

Form S - Main Track Out of Service

  • (1) Main track out of service between siding switches at Whitney. Switches lined and secured for siding. Movements will operate through siding in accordance with Rule 105.