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To pass an absolute signal and thereby change its aspect to stop; originated in the days of semaphore signals whose arms would drop to the stop aspect when passed [162] Kodachrome Southern Pacific Santa Fe Railroad's red, yellow, and black paint scheme, which resembled the packaging of Kodachrome color transparency film. This was the scheme ...
An arrangement of tracks where rolling stock is switched to and from trains, freight is loaded or unloaded, and consists made up. [262] [31] Yellow A color associated with a warning or a need to slow down when used by flags or signals, but the exact meaning varies from railway to railway. Yoke. Also Coupler Yoke, Bell Yoke, Guide Yoke, Valve Yoke.
In train order operation, a "train order" is an order issued by or through a proper railway official to govern the movement of trains". [ 1 ] Train order operation was widely used by the railroads of North America before the days of centralized traffic control (CTC), direct traffic control (DTC), and the use of track warrants conveyed by radio.
Directive to stop oscillation (wavering) of IR pointer. Steer Set magnetic compass heading indicated. Stern Request for, or directive to, intercept using stern geometry. Stinger Within a group, a formation of three or more aircraft with a single aircraft in trail. Stop Stop IR illumination of a target. Stranger
A signal with associated trip arm in the raised position (circled) Part of a railway signalling system, a train stop, trip stop or tripcock (sometimes called a tripper) is a train protection device that automatically stops a train if it attempts to pass a signal when the signal aspect and operating rules prohibit such movement, or (in some applications) if it attempts to pass at an excessive ...
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