What do UK train signals mean?
Flashing double yellow – indicates that the next signal is showing flashing yellow. Single yellow – Caution. The driver must prepare to stop the train at the next signal. Flashing yellow – warns that a lower-speed diverging route is set, at a high speed turnout. Red – Danger/Stop.
What do different train signals mean?
The most constant signals and the easiest to understand are single-head block signals. Red means stop; green means proceed, and yellow means caution or approach, usually indicating that the next signal is red.
What do Railway semaphore signals mean?
Railway semaphore signal is one of the earliest forms of fixed railway signals. This semaphore system involves signals that display their different indications to train drivers by changing the angle of inclination of a pivoted ‘arm’.
What does flashing yellow train signal mean?
Flashing yellow is usually telling the engineer to be prepared to stop at the second signal (advance approach). Is there a crossing with another track down the line? If so, the engineer is being advised that the other track may be in use.
What’s a red signal on a train?
Signals are similar to traffic lights, but for trains. They tell the train driver whether the track ahead is clear or not. In layman’s terms, green means it’s fine to go ahead, amber means slow down and prepare to stop and red means stop.
Why do trains honk late at night?
“The horns are for the safety of motorists and pedestrians,” Sease says. Some communities have worked through the Federal Railroad Administration to gain approval for “Quiet Zones,” in which trains do not blow horns at crossings so designated, Sease says.
What does a white shunt signal mean train?
A yellow aspect (Caution) tells the driver that the next signal is red (danger) and that they must slow down in preparation to stop at the next signal. The next aspect will always be red (danger) unless it changes as more the train’s route is clear. The train has no clearance beyond this point.
What is a railroad signal system?
Railway signalling is a system used to direct railway traffic and keep trains clear of each other at all times. Trains move on fixed rails, making them uniquely susceptible to collision.
What is the meaning of railroad lights?
The Meaning of Railroad Signal Lights. Like traffic lights for automobiles, train signals were created to prevent accidents and inform drivers of when the track ahead is clear. While railway lights are more complicated and vary in different parts of the world, colors are universally understood to mean the same thing: red for stop,…
What is a train signal?
Definition of train signal. : a signal conveyed from the cars of a railroad train to the locomotive by a mechanical device. You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.