Deck 6: Essential Terminology for Road Design and Traffic Control

Question 1

If the traffic detectors are used on all the approaches to an intersection, the control signal is known as

A)full traffic-actuated signal
B)semi-traffic actuated signals
C)speed control signals
D)all of these

Answer 1

full traffic-actuated signal

Question 2

The joints, parallel to the centre-line of the road, are called

A)longitudinal joints
B)transverse joints
C)expansion joints
D)all of these

Answer 2

longitudinal joints

Question 3

The longitudinal joints may be

A)tongue and groove type
B)butt type
C)weakened plane type
D)all of these

Answer 3

all of these

Question 4

The shape of a vertical curve is

A)parabolic
B)spiral
C)elliptical
D)any one of these

Question 5

An gradient on a road is said to be an exceptional gradient if its is

A)less than the minimum gradient
B)more than the maximum gradient
C)more than the minimum gradient
D)less than the maximum gradient

Question 6

The length of the tangent of a simple curve having angle of deflection ? and radius of curvature R, is equal to

A)R sin ?/2
B)R cos ?/2
C)R tan ?/2
D)R cot ?/2

Question 7

A complete signal-time cycle constitutes

A)red timing
B)yellow timing
C)green timing
D)all of these

Question 8

Alignment of a road is finally decided on the basis of

A)selection of route
B)field survey
C)trace cut
D)none of these

Question 9

A curve at the ridge of a hill having a convex shape is called a

A)valley curve
B)summit curve
C)re-entrant curve
D)salient curve

Question 10

The super structure of a road is called

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

Question 11

The natural soil on which the pavement rests and to which the entire load of structure is ultimately transferred, is known as the

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

Question 12

For jeepable roads, the width of pavement adopted is

A)3 m
B)3.75 m
C)5 m
D)5.5 m

Question 13

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

Question 14

The longitudinal joint in concrete pavements, as recommended by IRC, is of

A)tongue and groove type
B)butt type
C)weakened plane type
D)hinged type

Question 15

The major function of reinforcement, in concrete pavements, is

A)to strengthen the slab
B)to hold together the cracks
C)to control the development of cracks
D)all of these

Question 16

The volume of traffic, that would immediately use a new or an improved road when opened to traffic, is known as

A)generated traffic
B)development traffic
C)current traffic
D)all of these

Question 17

The longitudinal joints are provided when the width of road is more than

A)3 m
B)4 m
C)5.5 m
D)6.75 m

Question 18

The Motor Vehicle Act was enacted in

A)1930
B)1934
C)1939
D)1948

Question 19

The average number of vehicles per day passing on a section of the road during a particular year, is called

A)peak hour traffic
B)average daily traffic
C)design hourly volume
D)any one of these

Question 20

The reaction time of a driver

A)remains constant
B)increases
C)decreases

Question 21

The fundamental condition for a perfect transition curve is that radius of curvature at any point should be

A)directly
B)inversely

Question 22

The traffic capacity of a highway is always

A)equal
B)more
C)less

Question 23

National Highways Act, 1956 came into force from

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

Question 24

Super-elevation is expressed as

A)the difference of heights of two edges of the carriage-way to the width of the carriage-way
B)the difference of radii of curves
C)the difference of the road gradients
D)none of the above

Question 25

Design of both summit and valley curves is based on the assumption that the

A)curve is so flat that the length of curve is equal to the length of chord
B)two portions of the curve along the two tangents on either side of the point of intersection are equal
C)angles made by the tangent with the horizontal are very small and tangents of those angles are equal to the angles themselves (in radians)
D)all of the above