Maximum allowable grades are lower for railways than for highways. Th

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

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