Quote:
Originally Posted by hereward
Thanks Tony I didn’t know that. My dad once said that if a rock and roll yobo cut the wires the signal would go to clear, but Steve said they are counterbalanced to go to stop. (My dad had a low opinion of the younger generation.)
|
Signalling equipment is designed to be fail-safe. Although some of the early apparatus was flawed, accidents soon revealed the shortcomings and these were designed out, so semaphore signals will return to danger if the operating cable/linkage is removed.
There is always a possibility that a signal might be drooping, or half-showing, but as you might expect, any signal not showing correctly has to be interpreted by a driver as being at its worst state, ie Caution for a distant or Danger for a stop signal.
Similarly with colour light signals. If one is not displaying an aspect, by Rule Book definition it is at Danger.
BW.