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

The control operator must not establish a conflicting route into an occupied block or interlocking limits, or authorize a conflicting movement, unless it is safe to do so.

The control operator must avoid operating the device controlling a switch, derail, moveable point frog, or lock when any portion of a train is on or closely approaching the equipment.

8.5.2 If a signal or signal appliance functions improperly or the track is damaged, signals that govern movement on affected routes must display a stop indication. No movement on such routes may be permitted until track and signal appliances are examined and movement can occur safely.

8.5.3 Maintenance forces must contact the control operator, dispatcher, or proper authority before beginning repairs, disconnecting equipment, obstructing the track, or removing the track from service. Switches, moveable point frogs, and derails must be spiked or secured in the required position if any movement over them occurs before repairs are complete.

8.5.4 When a controlled signal displays a proceed indication, notify the control operator immediately if movement cannot occur promptly.

Green To Red 8.6 If a signal displaying a proceed indication changes to an indication requiring a train to stop, the train must stop at once. Report such a signal change to the train dispatcher.

Red Failed Signal 8.7 When a block is occupied, or when a switch is protected by a signal is changed from its normal position and that signal fails to display its most restricted indication, regard the signal as displaying stop. The train must stop immediately, and employees must warn others by radio of the exact location and status of the train. Contact the train dispatcher or control operator and do not move the train without permission.

Comply when the Signal is Seen Clearly 8.8 A train may comply with the next signal’s indication when its aspect can be clearly seen and the signal governs the track where movement is occurring or will be made. This does not apply when a rule, track warrant, dispatcher’s orders, or previous signal indication requires movement at restricted speed.

Restricted Speed Situations 8.9 When one of the following occurs, move at restricted speed until the leading wheels have passed the next governing signal or the end of the block system:

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    the train enters a block with no governing signal

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    the previous signal indication is unknown

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    a change of direction is made within a block.

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