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31.

The camber, for the drainage of surface water, was first introduced by

A.	Telford	B.	Tresaguet
C.	Sully	D.	Macadam

32.

National Highways Act, 1956 came into force from

A.	15th April, 1957	B.	15th April, 1958
C.	15th April, 1960	D.	15th April 1961

33.

In water-bound Macadam roads

A.	small broken stones are laid in two layers	B.	voids between the stones are filled by stone dust
C.	camber for drainage is given at the formation level itself	D.	all of the above

34.

According to Indian Roads Congress, the maximum width of a road vehicle is

A.	1.85 m	B.	2.25 m
C.	2.45 m	D.	3.2 m

35.

On the recommendations of the Indian Roads Congress, the National Highways should have two-lane traffic at least

A.	4 m	B.	6 m
C.	8 m	D.	10 m

36.

The State Highways should have 8 m wide carriage-way with 2 m wide shoulder on each side

Right

Wrong

37.

In order to give satisfactory service throughout the year, the road surface should

A.	have a good carriage-way	B.	have smooth gradient
C.	have a good wearing surface	D.	all of these

38.

The top of the ground on which the foundation of road rests, is called

A.	sub-grade	B.	soling
C.	base	D.	wearing layer

39.

The foundation of a road is also called

A.	soling	B.	base
C.	either (a) or (b)	D.	none of these

40.

The super structure of a road is called

A.	wearing layer	B.	wearing course
C.	road surfacing	D.	any one of these