Which one of the following is not an important feature of Tube Railways?
A. The railway stations have to be of cubical form
B. Escalators or moving stair cases are to be constructed to reach the tube railways
C. Only electric traction is to be used to avoid the smoke and ventilation problems
D. Automatic signaling system is to be used
Answer:A
Which one of the following is not an important feature of Tube Railways?
A. The railway stations have to be of cubical form B. Escalators or moving stair cases are to be constructed to reach the tube railways C. Only electric traction is to be used to avoid the smoke and ventilation problems D. Automatic signaling system is to be used