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73.

The maximum number of vehicles beyond which the rotary may not function efficiently is

A.	500 vehicles per hour	B.	500 vehicles per day
C.	5000 vehicles per hour	D.	5000 vehicles per day

74.

The maximum width of a vehicle as recommended by IRC is

A.	1.85m	B.	2.44 m
C.	3.81 m	D.	4.72 m

75.

The method of design of flexible pavement as recommended by IRC is

A.	group index method	B.	CBR method
C.	Westergaard method	D.	Benkelman beam method

76.

The most economical lighting layout which is suitable for narrow roads is

A.	single side lighting	B.	staggered system
C.	central lighting system	D.	none of the above

77.

The most efficient traffic signal system is

A.	simultaneous system	B.	alternate system
C.	flexible progressive system	D.	simple progressive system

78.

The number of repetitions, which the pavement thickness designed for a given wheel load should be able to support during the life of pavement is

A.	1000	B.	10000
C.	100000	D.	1000000

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