Question 1

The most efficient traffic signal system is
A)simultaneous system
B)alternate system
C)flexible progressive system
D)simple progressive system

Accepted Answer

The flexible progressive system is considered the most efficient traffic signal system because it adjusts signal timings based on real-time traffic conditions, allowing for smoother traffic flow and reduced congestion.

Question 2

The flexible pavement distribute the wheel load
A)directly to sub-grade
B)through a set of layers to sub-grade
C)through structural action
D)none of these

Accepted Answer

Flexible pavements distribute the wheel load through a set of layers to the sub-grade, utilizing the structural action of these layers to disperse the load.

Question 3

The shape of the camber provided for cement concrete pavement is
A)straight line
B)parabolic
C)elliptical
D)none of these

Accepted Answer

The camber for cement concrete pavement is typically provided in a straight line to ensure proper drainage and structural stability.

Question 4

The Central Road Research Institute (C.R.R.I.) was started in Delhi, in
A)1951
B)1955
C)1964
D)1965

Accepted Answer

The Central Road Research Institute (CRRI) was started in Delhi in 1951 to carry out research and development in the field of road and road transportation.

Question 5

A cement grouted road is an example of
A)semi-rigid
B)rigid
C)flexible

Accepted Answer

The answer of A cement grouted road is an example...

Question 6

Of all the forces stressing a concrete pavement, the most significant are those imposed by the
A)change in temperature
B)change in moisture
C)wheel loads
D)force of friction

Accepted Answer

Wheel loads are the most significant forces stressing a concrete pavement because they directly apply pressure and cause wear on the surface, leading to potential damage and deterioration over time.

Question 7

Super-elevation should not be
A)more
B)less

Accepted Answer

The answer of Super-elevation should not be
A)more
B)less...

Question 8

The highest point on road surface is called
A)crown
B)camber
C)gradient
D)berm

Accepted Answer

The highest point on a road surface is referred to as the "crown." This is designed to facilitate drainage away from the road, preventing water accumulation and potential damage.

Question 9

The foundation of a road is also called
A)soling
B)base
C)either (a) or (b)
D)none of these

Accepted Answer

The foundation of a road can be referred to as both soling and base, depending on the context and regional terminology.

Question 10

The average speed maintained by a vehicle over a particular stretch of road, while the vehicle is in motion, is known as
A)design speed
B)running speed
C)spot speed
D)overall speed

Accepted Answer

Running speed refers to the average speed of a vehicle over a distance, considering only the time when the vehicle is in motion and excluding any stops or delays.

Question 11

The group index method of designing flexible pavement is
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

Accepted Answer

The group index method of designing flexible pavement is an empirical method that relies on the physical properties of the sub-grade soil, including its particle size distribution and Atterberg limits, to determine the pavement thickness.

Question 12

Steep terrain is a terrain with cross-slope greater than 60 percent.
A)Correct
B)Incorrect

Accepted Answer

Steep terrain is defined as terrain with a cross-slope greater than 60 percent.

Question 13

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

Accepted Answer

Transverse joints are designed to be perpendicular to the direction of the road, accommodating temperature-induced expansion and contraction across the pavement's width.

Question 14

Gradients more than the floating gradient result in the
A)decrease
B)increase

Accepted Answer

Gradients more than the floating gradient result in an increase. The floating gradient refers to a specific value that balances forces in a system, such as in fluid dynamics or atmospheric pressure gradients. Exceeding this gradient typically leads to an increase in the rate of change or movement, such as increased flow speed in fluids or more severe weather patterns in meteorology.

Question 15

Longitudinal joints in concrete pavements
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

Accepted Answer

Longitudinal joints in concrete pavements serve multiple purposes: they divide the pavement into lanes, accommodate differential settlements of the sub-grade, and facilitate the construction process by allowing concrete to be laid in manageable widths.

Question 16

The value of ruling gradient in hills, as recommended by Indian Roads Congress, is
A)1 in 10
B)1 in 20
C)1 in 30
D)1 in 40

Accepted Answer

The Indian Roads Congress recommends a ruling gradient of 1 in 20 for hill roads. This gradient balances the need for manageable ascents and descents with the constraints of terrain and engineering.

Question 17

The selection of design curve in Wyoming method of flexible pavement design, is based upon
A)annual precipitation
B)water-table
C)frost action
D)all of these

Accepted Answer

The selection of design curve in the Wyoming method of flexible pavement design is based on a combination of factors including annual precipitation, water-table, and frost action. These environmental factors significantly influence the pavement's performance and durability, hence they are all considered in the design process.

Question 18

To prevent the overturning of a bullock cart on curves, the maximum value of super-elevation as prescribed by the Indian Roads Congress is
A)1 in 5
B)1 in 10
C)1 in 15
D)1 in 20

Accepted Answer

The answer of To prevent the overturning of a bullock...

Question 19

According to IRC : 52-1973, the first stage for fixing up alignment of a hill road is
A)trace cut
B)detailed survey
C)preliminary survey
D)reconnaissance

Accepted Answer

Reconnaissance is the first stage for fixing up alignment of a hill road according to IRC: 52-1973, as it involves initial investigation of the area to determine the most feasible route for the road.

Question 20

Class-5 roads have a width of
A)2.45 m
B)3.65 m
C)4.9 m
D)6 m

Accepted Answer

The answer of Class-5 roads have a width of
A)2.45 m
B)3.65...

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

The most efficient traffic signal system is

The flexible pavement distribute the wheel load

The shape of the camber provided for cement concrete pavement is

The Central Road Research Institute (C.R.R.I.) was started in Delhi, in

A cement grouted road is an example of

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

Super-elevation should not be

The highest point on road surface is called

The foundation of a road is also called

The average speed maintained by a vehicle over a particular stretch of road, while the vehicle is in motion, is known as

The group index method of designing flexible pavement is

Steep terrain is a terrain with cross-slope greater than 60 percent.

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

Gradients more than the floating gradient result in the

Longitudinal joints in concrete pavements

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

The selection of design curve in Wyoming method of flexible pavement design, is based upon

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

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

Class-5 roads have a width of