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Grand Scales General Code of Operating Rules First Edition January 1, 2007

Communications for backing and shoving movements must specify the direction and distance and must be acknowledged when the distance specified is more than four cars.

Any employee operating a radio must do the following:

  • --

    before transmitting, listen long enough to make sure the channel is not

being used.

  • --

    give the required identification.

  • --

    not proceed with further transmission until acknowledgement is

received. Employees transmitting or acknowledging a radio communication must begin with the required identification. The identification must include the following:

  • 1.

    For base or wayside stations:

    • a.

      Name or initials of the railroad.

    • b.

      Name and location or other unique designation.

  • 2.

    For mobile units:

    • a.

      Name or initials of the railroad.

    • b.

      Train name (number), engine number, or words that identify the precise mobile unit.

If the communication continues without interruption, repeat the identification every five minutes.

After making a positive identification for switching, classification, and similar operations within a yard, fixed and mobile units may use a short identification after the initial transmission and acknowledgement.

An employee who receives a transmission must repeat it to the person transmitting the message, except when the communication:

  • --

    concerns switching operations

  • --

    is general and does not contain any information, instruction, or advice

that could affect the safety of a railroad operation. The employee must say, “Over,” to the employee receiving the transmission when the communication is complete and a response is expected.

The employee transmitting must give the required identification and say, “Out,” to the employee receiving the transmission when the communication is complete and no response is expected.

An employee receiving a radio call must acknowledge the radio call immediately unless it is unsafe to do so. If the employee is not able to talk at that time, the employee receiving must say, “Stand by.”

Emergency calls will begin with the words, “Emergency—emergency— emergency.” These calls will only be used to cover initial reports of derailments, collision, washouts, fires, track obstructions, or injury to employees or the public.

All employees must give absolute priority to an emergency communication.


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