Question 1

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

Accepted Answer

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

Question 2

The foundation of a road is also called

Accepted Answer

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

Question 3

In hill roads, minimum sight distance required is

Accepted Answer

A)  stopping sight distance
B)  passing sight distance
C)  braking distance
D)  none of these A

Question 4

According to IRC : 52-1973, the first stage for fixing up alignment of a hill road is

Accepted Answer

A)  trace cut
B)  detailed survey
C)  preliminary survey
D)  reconnaissance

Question 5

Class-5 roads have a width of

Accepted Answer

A)  2.45 m
B)  3.65 m
C)  4.9 m
D)  6 m

Question 6

The most efficient traffic signal system is

Accepted Answer

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

Question 7

Of all the forces stressing a concrete pavement, the most significant are those imposed by the

Accepted Answer

A)  change in temperature
B)  change in moisture
C)  wheel loads
D)  force of friction

Question 8

The colour of light used for visibility during fog is

Accepted Answer

A)  red
B)  yellow
C)  green
D)  white

Question 9

The value of ruling gradient in hills, as recommended by Indian Roads Congress, is

Accepted Answer

A)  1 in 10
B)  1 in 20
C)  1 in 30
D)  1 in 40

Question 10

The suitable gradient within which the engineer must endeavour to design the road is called

Accepted Answer

A)  limiting gradient
B)  ruling gradient
C)  average gradient
D)  exceptional gradient

Question 11

Gradients more than the floating gradient result in the

Accepted Answer

A)  decrease
B)  increase

Question 12

The flexible pavement distribute the wheel load

Accepted Answer

A)  directly to sub-grade
B)  through a set of layers to sub-grade
C)  through structural action
D)  none of these

Question 13

Longitudinal joints in concrete pavements

Accepted Answer

A)  divide the pavement into lanes
B)  take care of the unequal settlement of the sub-grade
C)  help in laying out concrete in convenient widths
D)  all of the above

Question 14

The highest point on road surface is called

Accepted Answer

A)  crown
B)  camber
C)  gradient
D)  berm

Question 15

Super-elevation should not be

Accepted Answer

A)  more
B)  less

Question 16

To prevent the overturning of a bullock cart on curves, the maximum value of super-elevation as prescribed by the Indian Roads Congress is

Accepted Answer

A)  1 in 5
B)  1 in 10
C)  1 in 15
D)  1 in 20

Question 17

The group index method of designing flexible pavement is

Accepted Answer

A)  an empirical method based on the physical properties of the sub-grade woil
B)  an empirical method based on the strength characteristics of the sub-grade woil
C)  a semi-empirical method
D)  none of these

Question 18

The shape of the camber provided for cement concrete pavement is

Accepted Answer

A)  straight line
B)  parabolic
C)  elliptical
D)  none of these

Question 19

A road sign is generally installed above the ground at a height of

Accepted Answer

A)  2.75 m to 2.80 m
B)  2.95 m to 3.00 m
C)  3.15 m to 3.5 m
D)  more than 3.5 m

Question 20

Transverse joints are provided at right-angles to the length of road.

Accepted Answer

A) True 
 B)False

Exam 10: Road Infrastructure and Design: Understanding Traffic Signals, Pavement