One Yellow
Two yellow
Three yellow
Four yellow
Answer is Right!
Answer is Wrong!
The correct answer is: B. Two yellow
A distant signal shows two yellow lights in normal condition in double distant signalling. The two yellow lights are arranged vertically, with the lower light being brighter than the upper light. The distant signal is located at a distance of about 1,000 meters from the home signal. The purpose of the distant signal is to warn the driver of an approaching train that the next signal is at danger.
The other options are incorrect because:
- Option A is incorrect because a distant signal does not show one yellow light.
- Option C is incorrect because a distant signal does not show three yellow lights.
- Option D is incorrect because a distant signal does not show four yellow lights.