In double Distant signalling, outermost signal is called as ________. A. Distant B. Call-on C. Stop D. None of these

The correct answer is A. Distant.

In double distant signalling, the outermost signal is called the distant signal. It is located at a distance of about 1 mile from the home signal. The distant signal is used to warn the driver of the train that the home signal is at danger. The distant signal is usually a semaphore signal, which is a type of signal that uses arms to indicate the track’s status. The arms of the distant signal are usually red and white, and they are displayed in a horizontal position when the signal is at danger.

The other options are incorrect.

• Option B, call-on, is the name of the signal that is located between the distant signal and the home signal. The call-on signal is used to indicate to the driver of the train that the home signal is at caution. The call-on signal is usually a semaphore signal, which is a type of signal that uses arms to indicate the track’s status. The arms of the call-on signal are usually yellow and white, and they are displayed in a diagonal position when the signal is at caution.
• Option C, stop, is the name of the signal that is located at the entrance to the station. The stop signal is used to indicate to the driver of the train that the track is blocked. The stop signal is usually a semaphore signal, which is a type of signal that uses arms to indicate the track’s status. The arms of the stop signal are usually red, and they are displayed in a vertical position when the signal is at stop.
• Option D, none of these, is incorrect because it is not one of the possible answers.