Could any one advise me?
When we say the signal is normal , it means that the signal is at red. Normally it appies to a controlled signal.
How about the automatic signal, does it become red after a train passed. Then it will automatically be clear for next train, it becomes green/double yellow. If so, how long it takes to change from red to green/double yellow.
When we say the signal is normal , it means that the signal is at red. Normally it appies to a controlled signal.
How about the automatic signal, does it become red after a train passed. Then it will automatically be clear for next train, it becomes green/double yellow. If so, how long it takes to change from red to green/double yellow.