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Vietnamese railroad crossing signals with lights & gates, and a 'stop, look for trains before crossing the track' sign below Signal and equipment systems arranged at crossroads to ensure traffic safety and prevent accidents. All organizations and individuals must be responsible for protecting, not arbitrarily moving, appropriating, damaging or ...
The Vienna Convention on Road Signs and Signals, a multilateral treaty of the United Nations with the intention of standardizing traffic signs around the world, prescribes several different regulations for the "crossbuck" sign. The sign should consist of two arms not less than 1.2 metres (3.9 ft) long, crossed in the form of an . The first ...
Level crossing signals are electronic warning devices for road vehicles at railroad level crossings. Level crossings can be operated in various ways. In some countries such as the UK, the warning devices are more often than not activated by remote control, I.e. an operator pressing buttons. However, the majority of countries have automated systems.
The railroad then developed a more effective system consisting of wooden balls, painted red, white or black, and hoisted up or down a pole on a rope-and-pulley system. The initial use of these signals was merely to indicate the on-time status of trains, rather than to control train movements.
In the 19th century and for much of the 20th, a sign warning "Stop, look, and listen" (or similar wording) was the sole protection at most level crossings. Today, active protection is widely available, and fewer collisions take place at level crossings with active warning systems. [ 11 ]
A cheaper alternative is the installation of a lineside sign that notifies the driver to cancel and ignore the warning. This sign is a blue square board with a white St Andrew's cross on it (or a yellow board with a black cross, if provided in conjunction with a temporary speed restriction).
When a train has made a full brake application due to adverse event, or has lost its train air due to a defective valve (a "kicker"), or a broken air line or train separation. The train crew will normally declare that they are "in emergency" over the train radio, thus warning other trains and the dispatcher that there is a problem. [101] [102]
Railroad yard in Chicago, Illinois, as seen in December 1942 Yard 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 ...