Deck 11: Highway Design and Traffic Safety

Question 1

Greater the super-elevation, more will be convenience to the slow moving traffic.

A)Right
B)Wrong

Answer 1

Wrong

Question 2

The structure of a road is composed of

A)sub-grade
B)sub-base
C)base
D)all of these

Answer 2

all of these

Question 3

The joints, for forming satisfactory constituents of a concrete pavement, must

A)continue to remain water-proof for all times
B)not induce structural weakness in the pavement
C)not result into deterioration in the riding quality of the pavement
D)all of the above

Answer 3

all of the above

Question 4

As per IRC recommendations, the sub-grade or sub-base layer whatever underlies the concrete wearing slab, in concrete pavements, must confirm to the requirement that

A)no soft spots are present in the sub-grade or sub-base
B)the base or sub-base extends to atleast 30 cm wider on either side of the width to be concreted
C)the sub-grade is properly drained
D)all of the above

Question 5

Highway capacity is defined as the total number of vehicles

A)that can be accomodated on a unit length of the road
B)that can pass a given point in a unit period of time
C)that can pass a given point in a specified period of time
D)none of the above

Question 6

The sub-grade is the final load carrying part of the structure.

Question 7

The stopping sight distance is always

A)equal to
B)less than
C)greater than

Question 8

The purpose of traffic surveys is to

A)know the type of traffic
B)determine the facilities to traffic regulations
C)design proper drainage system
D)all of the above

Question 9

The rate of rise or fall of the road surface along its length, is called

A)cant
B)super-elevation
C)gradient
D)banking

Question 10

The traffic census is carried out to study

A)speed and delay
B)traffic volume
C)road parking
D)origin and destination

Question 11

In case of multi-lane road, overtaking is generally permitted from

A)left side
B)right side
C)both sides
D)any one of these

Question 12

The gradient of a road depends upon the

A)nature of traffic
B)nature of ground
C)rainfall of the locality
D)all of these

Question 13

The overall height of the vehicle determines the

A)width of the pavement needed for the highway
B)width of the bridges on the highway
C)lengths of the valley curves at the underpasses in the city areas
D)hight of the tunnels along the highways
E)Both (c) and (d)

Question 14

A vertical curve on a road provides change in gradient.

A)Correct
B)Incorrect

Question 15

The main advantage of providing transition curves on highways, is

A)to obtain transition from the tangent to the circular curve and from the obtain transition from the tangent to the circular curve and from the circular to the tangent
B)to obtain a gradual increase of curfature from a value of zero at the tangent to a maximum at the circular curve
C)to have a gradual increase of super-elevation from zero at the tangent to a specific maximum at the circular curve
D)all of the above

Question 16

According to IRC : 52-1973, for a single lane National highway in a hilly area

A)the total width of the road-way must be 6.25 m
B)the width of the carriage way must be 3.75 m
C)the shoulder on either side must be 1.25 m
D)all of the above

Question 17

According to IRC recommendations, the width of transverse expansion joint should be

A)10 mm
B)20 mm
C)30 mm
D)40 mm

Question 18

On horizontal and vertical curves, crossing sight distance must be provided to avoid any collision of two vehicles coming from opposite directions.

A)Agree
B)Disagree

Question 19

The parapet walls are usually required on the valley side of the roadway, in order to

A)retain the earth from slippage
B)properly guide the vehicles to the roadway
C)provide a good drainage system
D)keep the road dry

Question 20

If the width of cariage way is 10 m and the outer edge is 40 cm higher than the inner edge, then the super-elevation required is

A)1 in 25
B)1 in 100
C)1 in 400
D)none of these

Question 21

A terrain with cross-slope less than 10 percent, is called

A)steep terrain
B)mountainous terrain
C)level terrain
D)rolling terrain

Question 22

The speed that a driver adopts on a highway depends on the

A)Physical characteristics of the highway and its surroundings
B)weather conditions in the area
C)speed limitations placed upon the vehicles
D)all of the above

Question 23

A curve which consists of a single are connecting two straights is known as

A)simple circular curve
B)reverse circular curve
C)cubic spiral curve
D)lamniscate

Question 24

The longitudinal levels, in detailed survey of a hill road, should be taken at

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