1.

Maximum allowable grades are lower for railways than for highways. The reason is:

A. Steel wheel on steel rails have greater frictional co-efficient than rubber tyres on pavements
B. Steel wheel on steel rails have lower frictional co-efficient than rubber tyres on pavements
C. High grade causes discomfort to passengers
D. Trains are longer than vehicles on highways
Answer» C. High grade causes discomfort to passengers


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