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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.
On the approach to a movable item of infrastructure, such as points or switches or a swingbridge; In advance of other signals; On the approach to a level crossing; At a switch or turnout; Ahead of platforms or other places that trains are likely to be stopped; At train order stations 'Running lines' are usually continuously signalled.
Normally, level crossing warning signals display no aspect (i.e. are unlit). They light up in the front of an approaching train which is the first clue that the system is working correctly. Level crossing warning signals are unrelated to other signals, therefore in case of Osp1 signal a train must proceed at 20 km/h regardless the higher speed ...
A level crossing is an intersection where a railway line crosses a road, path, or (in rare situations) airport runway, at the same level, [1] as opposed to the railway line or the road etc. crossing over or under using an overpass or tunnel.
To warn people at a level crossing that a train is coming. An indicator, located 0.4 kilometres (1 ⁄ 4 mile) from the crossing, marks the location where the horn must be sounded when the train is travelling faster than 70 km/h (43 mph). When the train is travelling at 70 km/h or less, this signal must be sounded for twenty seconds prior to ...
Where the two networks interface, such as at the Goodwood level crossing or at Torrens Junction, control is usually by the ARTC after release from Adelaide Metro. The Western Australian system is the simplest to understand, and the complexities of leading position lights and other odd attachments to signalling apparatus have been either ...
And problem crossings can remain dangerous for years. “We know how to improve the safety of many of these crossings,” said Thomas Chapman, a member of the National Transportation Safety Board ...
Certain types of road level crossings Level junctions and gauntlet track A signal cannot display a 'proceed' aspect unless the infrastructure item(s) that it protects are in the correct position for the passage of a train or, in the case of flat junctions and gauntlet track, no other signal is cleared for a conflicting move.