approach signal การใช้

The engineer made no attempt to slow down after passing the approach signal.
The new approach signals the end of a " one drug fits all " practice, he said.
The halt is beyond the approach signal to Dohna station and is thus operationally part of Dohna station.
The enquiry has found no fault with the train's brakes Also there was no signal failure, the approach signal was red.
Distant signals are often referred to as "'Approach Signals "'as the signal block before the interlocking is known as the approach block.