Important Questions about Transportation Engineering -2

Posted on by Iyman Faisal
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1. Peak Hour Flow “PHF”

a. Maximum value = 1
b. Minimum value = 0.25
c. Maximum value = 1.5
d. Minimum value = 0.5

Correct Selection: 
1. “a” and “b”
2. “c” and “d”        
3. None of these
4. Option d

  “a” and “b”  

2. What is the maximum value of PHF?

  1. 1
  2. 0.35
  3. 0
  4. 0.25

1 

3. What is the minimum value of PHF (Peak Hour Factor):

  1. 0.50
  2. 1.00
  3. 0.25
  4. 0.75

0.25 

4. The advantage of providing super elevation on roads is:

  1. Higher speed of vehicles
  2. Increased volume of traffic
  3. Reduced maintenance cost of the roads
  4. Draining off rain water quickly
  5. All of the above

All of the above 

5. Super elevation is used at:

  1. Horizontal curves to avoid centrifugal force at high speeds
  2. Straight Highways to avoid centrifugal force at high speeds
  3. Car Parking to avoid centrifugal force at high speeds
  4. Bus Stations to avoid centrifugal force at high speeds

Horizontal curves to avoid centrifugal force at high speeds 

6. Consider the following statements : 
Collision diagram is used to

  1. Study accident pattern
  2. Eliminate accidents
  3. Determine remedial measures
  4. Make statistical analysis of accidents

Of these statements :

  1. 1 and 2 are correct
  2. 1 and 3 are correct
  3. 3 and 4 are correct
  4. 2 and 4 are correct

2 and 4 are correct 

7. Consider the following statements : 

  1. An ascending gradient of 1 in 100 meets an ascending gradient of 1 in 120 to form a valley curve.
  2. A falling gradient of 1 in 25 meets a falling gradient of 1 in 50 to form a summit curve.
  3. The length of summit curve is determined on the basis of head light sight distance.

Which one of the statements given above is/are correct ?

  1. 1 and 2
  2. 2 and 3
  3. 1 and 3
  4. 2 only

2 and 3 

8. Consider the following statements : 

Wind rose diagram is used for the purpose of

  1. Runway orientation.
  2. Estimating the runway capacity
  3. Geometric design of holding apron.

Of these statements :

  1. 1 and 2 are correct
  2. 2 and 3 are correct
  3. 1 and 3 are correct
  4. “1” is correct

“1” is correct 

9. Clay Substance is

    1. Excellent Material for road construction
    2. Added Material in Road Layers
    3. Bad Substance for Road Construction
    4. Good Material for Road Construction

Bad Substance for Road Construction 

10. In order to provide the proper geometric standard for each roadway/highway component, what is it that needs to be established first

    1. Functional Classification
    2. Traffic Capacity
    3. Road Networks
    4. Existing Design

Traffic Capacity 

11. In highway work, grade is usually given in terms of:

    1. Percent
    2. Elevation
    3. Degrees
    4. Slope

 Percent 

12. What is the primary purpose of a retaining wall in road construction?

  1.  To support the road surface
  2.  To prevent soil erosion
  3.  To provide drainage for the road
  4.  To control traffic flow

To prevent soil erosion

13. Which of the following is a common material used for road surface construction?

  1.  Clay
  2.  Asphalt
  3.  Glass
  4.  Steel

Asphalt

14. Which of the following factors affects the pavement design of a road?

  1.  Climate
  2.  Traffic load
  3.  Soil condition
  4.  All of the above

All of the above

15. Which type of soil is most suitable for the construction of a road foundation?

  1.  Clay soil
  2.  Sandy soil
  3.  Gravelly soil
  4.  Peaty soil

Gravelly soil

16. What is the main difference between a rigid pavement and a flexible pavement?

  1. Rigid pavements use concrete, flexible ones use asphalt
  2. Rigid pavements are more durable
  3. Flexible pavements are more expensive
  4. Rigid pavements are used only in urban areas

Rigid pavements use concrete, flexible ones use asphalt

17. Which of the following is used to control the depth of frost penetration in roads?

  1. Frost-resistant aggregates
  2. Insulation layers
  3. Thicker pavement layers
  4. Heated road surfaces

Insulation layers

18. In road design, what does the term “super elevation” refer to?

  1. The slope of the road towards the shoulder
  2. The vertical curve of the road
  3. The banking of a curve to reduce centrifugal force
  4. The height of the road above sea level

The banking of a curve to reduce centrifugal force

19. What is the ideal thickness of a road surface in terms of structural integrity?

  1.   2 to 4 cm
  2.   5 to 7 cm
  3.   10 to 12 cm
  4.   15 to 20 cm

10 to 12 cm

20. Which of the following is considered the most effective method for controlling traffic speed in urban areas?

  1.  Speed bumps
  2.  Signage
  3.  Traffic signals
  4.   Road barriers

Speed bumps

21. The CBR (California Bearing Ratio) test measures the strength of which type of material?

  1.  Asphalt
  2.  Soil
  3.  Concrete
  4.  Aggregate

Soil

22. What is the purpose of a camber in road design?

  1.  To improve road drainage
  2.  To reduce road maintenance costs
  3.  To enhance road aesthetics
  4.  To increase road traffic capacity

To improve road drainage

23. What is the standard maximum speed limit on urban roads, according to the IRC guidelines?

  1.  40 km/h
  2.  60 km/h
  3.  80 km/h
  4.  100 km/h

60 km/h

24. The IRC recommends a maximum gradient for hilly roads to be?

  1.  3%
  2.  5%
  3.  7%
  4.  10%

7%

25. What is the key feature of flexible pavements?

  1.  They are rigid and concrete-based
  2.  They are made using asphalt and can bend without cracking
  3.  They can be resurfaced easily
  4.  They are mainly used in high-traffic areas

They are made using asphalt and can bend without cracking

26. Which test is used to determine the strength of road aggregates?

  1.  Flakiness index test
  2.  Los Angeles abrasion test
  3.  Specific gravity test
  4.  Slake durability test

Los Angeles abrasion test


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