Category: Highway Engineering Objective Questions

250+ TOP MCQs on Design of Traffic Intersections and Answers

Highway Engineering Multiple Choice Questions on “Design of Traffic Intersections”.

1. Which of the following is not an intersection at grade?
a) Un-channelized
b) Channelized
c) Rotary
d) Different level intersections
Answer: d
Clarification: The intersection at grade include un channelized, channelized and rotary intersections, the different level intersections are used for over pass and under pass.

2. An intersection that is provided for different levels of road is called __________
a) Intersection at grade
b) Grade separated intersections
c) Channelized intersection
d) Rotary intersection
Answer: b
Clarification: An intersection that is provided for different levels of road is called grade separated intersection, thus eliminating the crossing manoeuvre.

3. If the velocity of a vehicle is 60kmph and the other vehicle velocity is 20kmph, then the relative velocity is?
a) 80kmph
b) 40kmph
c) 20kmph
d) 60kmph
Answer: b
Clarification: The relative velocity is the difference of the velocities moving in same direction and sum of the velocities of vehicle moving in opposite direction.

4. If the angle of merging is low, then the relative speed will be __________
a) Low
b) High
c) Medium
d) Depends on width of pavement
Answer: a
Clarification: If the angle of merging is small, then the relative velocity will be low and impact will be low.

5. If an additional pavement is provided for lane change, then that intersection is called __________
a) Tee intersection
b) Rotary intersection
c) Flared intersection
d) Skewed intersection
Answer: c
Clarification: If an additional pavement is provided for lane change, then that intersection is called as flared intersection, it is provided in very crowded areas.

6. Which of the following is not a requirement for the intersection at grade?
a) Area of conflict should be large
b) Adequate visibility
c) Avoiding sudden change of path
d) Sufficient radius should be provided
Answer: a
Clarification: The intersection at grade requirements do not include large conflict area, it says the area of conflict should be as less as possible.

7. The most complex type of intersections for traffic operation is __________
a) Un-channelized
b) Channelized
c) Rotary
d) Grade separated
Answer: a
Clarification: The channelized intersections are the most complex type of intersections for traffic operation, but they are very easy to construct.

8. The procedure of adopting medians and traffic island in an un-channelized intersection is called __________
a) Dividing
b) Crossing
c) Channelizing
d) Designing
Answer: c
Clarification: The procedure of adopting medians and traffic island in an un-channelized intersection is called as channelizing of the intersection.

9. In India the design velocity at rotary is considered as __________
a) 30kmph
b) 40kmph
c) 50kmph
d) 60kmph
Answer: b
Clarification: In India, usually there is no limit to approach the rotary but for safety it is considered as 40kmph for design purposes.

10. If the coefficient of friction is 0.43, and the design velocity is 40kmph then the radius of curve is?
a) 20m
b) 25m
c) 28m
d) 30m
Answer: d
Clarification: The radius of curve is given by
R=V2/127f
R=40*40/ (127*0.43)
R=30m.

11. The minimum radius for rotary recommended by IRC is?
a) 1.3 times of entry radius
b) 1.33 times of entry radius
c) 1.5 times of entry radius
d) 1.7 times of entry radius
Answer: b
Clarification: IRC recommends an average radius of 1.33 times the entry radius for rotary design.

12. If the average width of the entry section is 3m and the exit is 6m then the average width is?
a) 4m
b) 4.5m
c) 5.0m
d) 5.5m
Answer: b
Clarification: The average width is average of entry and exit width
=3+6/2
=4.5m.

13. The PCU value near rotary is highest for __________
a) Cars
b) Bus
c) Cycle
d) Animal drawn vehicles
Answer: d
Clarification: The highest value for PCU near rotary is for animal drawn vehicle which is 4 to 6 PCU units.

14. In a traffic lane the traffic moving extreme left is 250 PCU and in extreme right it is 240 PCU, the sum of the weaving traffic crossing left and right is 500 PCU, find proportion of weaving traffic.
a) 0.5
b) 1.5
c) 2.5
d) 3.0
Answer: a
Clarification: b is the proportion of traffic entering into rotary, c is the proportion of traffic leaving the rotary, a is the proportion of traffic moving in the left lane and d is the proportion of traffic moving in the right line
P=b + c/ (a + b + c+ d)
P=500/ (250+500+240)
P=0.5.

15. The capacity of rotary in PCU per hour for a proportion of weaving traffic 0.5 and the width of weaving section is 12m, average width of entry is 0.4m and length of the weaving section is 7.2m.
a) 1088 PCU
b) 1100PCU
c) 1200 PCU
d) 1300PCU
Answer: a
Clarification: Qi = 280W [1+e/W][1-p/3] / (1+W/L)
Q=280*12*[1+0.4/12][1-0.5/3]/(1+12/7.2)
Q=1088PCU.

250+ TOP MCQs on Stresses in Flexible Pavements and Answers

Highway Engineering Multiple Choice Questions on “Stresses in Flexible Pavements”.

1. Boussinesq assumed soil as _____________
a) Homogeneous
b) Heterogeneous
c) Rigid
d) Flexible
Answer: a
Clarification: The assumption by Boussinesq was the soil is homogeneous, elastic and isotropic under a circular load.

2. Two elastic theory was developed by _____________
a) Boussinesq
b) Westergard
c) Burnister
d) McAdam
Answer: c
Clarification: The two elastic theory was developed by Burnister after Boussinesq developed the equation for evaluation of stress.

3. Boussinesq assumed the load as a _____________
a) Point load
b) UDL
c) UVL
d) Triangular load
Answer: a
Clarification: Boussinesq assumed the load as a single point load acting at a depth z and radius r.

4. The ratio of z/a=0 represent the stress at _____________
a) Top surface
b) Bottom surface
c) Middle
d) Maximum stress point
Answer: a
Clarification: The depth is zero, so the stress represented is at the surface of the pavement.

5. The z is a function of _____________
a) P, a
b) P, z
c) P, a, z
d) P only
Answer: c
Clarification: The depth is a function of the stress, depth and radius of the load acting on the point.

6. The ratio of the radius r/a=0 represents _____________
a) Center of chart
b) Center of load
c) Center of stress
d) Center of the pavement
Answer: a
Clarification: The radius is zero so it is possible only in a chart, which represents a point in the center of the chart.

7. The Poisson’s ratio of soil is assumed as _____________
a) 0.5
b) 0.6
c) 0.7
d) 0.8
Answer: a
Clarification: The Poisson’s ratio for a homogeneous soil is assumed as 0.5.

8. At surface the value of constant F is _____________
a) 1
b) 1.18
c) 1.5
d) 2
Answer: c
Clarification: The value of the constant F in finding out the deflection is 1.5.

9. The unit of deflection is measured in _____________
a) mm
b) N mm
c) joule
d) watt
Answer: a
Clarification: The deflection is measured in mm, cm or m depending on the requirement of the pavement.

10. The constant in rigid pavement design is _____________
a) 1.5
b) 1.18
c) 2
d) 3
Answer: b
Clarification: The constant value of the pavement in rigid pavement design is assumed as 1.18.

11. The diameter of the plate in plate load test is _____________
a) 30 cm
b) 30 mm
c) 3 m
d) 0.3 m
Answer: a
Clarification: The diameter of the plate used in the plate bearing test is 30 cm, it is a rigid plate.

12. What is the minimum deflection assumed in plate bearing test?
a) 0.25 mm
b) 0.25 cm
c) 2.5 cm
d) 2.5 m
Answer: b
Clarification: The deflection is usually fixed in plate bearing test and it varies between 0.25 cm and 0.5 cm.

13. The layer which should have high modulus of elasticity is?
a) Soil
b) Sub grade
c) Sub base
d) Pavement
Answer: d
Clarification: The modulus of elasticity should increase as the pavement layer increase from bottom to top.

14. What is the most superior material used in the pavement?
a) DBM
b) WBM
c) Tar
d) Bitumen
Answer: d
Clarification: The most superior material used in the pavement is bitumen which is mostly used for the surface layer.

15. In which layer system the modulus of elasticity will be equal for all layers?
a) Single
b) Double
c) Triple
d) Four layer
Answer: a
Clarification: In the single layer of system all the layers have same modulus of elasticity which means it is covered with only one material.

250+ TOP MCQs on Soil-Lime Stabilization and Answers

Highway Engineering Multiple Choice Questions on ” Soil-Lime Stabilization”.

1. The non desirable property of soil after addition of lime is __________
a) High affinity with water
b) Friability
c) Pulverisation
d) Reduction in plasticity
Answer: a
Clarification: The soil should show less affinity towards the water, and all other changes are desirable.

2. The maximum dry density of soil lime mix is decreased by __________
a) 1 to 1.5%
b) 2 to 2.5%
c) 2 to 3%
d) 4 to 5%
Answer: c
Clarification: The maximum dry density decrease by 2 to 3%, but it doesn’t effect its strength in any manner.

3. The structure of clay is __________
a) Flocculated
b) Dispersed
c) Elongated
d) Flaky
Answer: a
Clarification: The structure of clay is formed in flocks and when they react, a flocculated structure is formed.

4. The flocculated substances are __________
a) Stable
b) Unstable
c) Neutral
d) Depends on soil
Answer: a
Clarification: The flocculated substances are very stable, and they even remain stable under subsequent soaking.

5. The factor on which the property of soil lime doesn’t depend is __________
a) Soil
b) Lime
c) Shear
d) Curing
Answer: c
Clarification: The soil lime doesn’t depend on the shear, as it is a property of soil it can’t change the stability.

6. The increase in soil strength depends on __________
a) Clay fraction
b) Thixotropy
c) Activity
d) Shear
Answer: a
Clarification: The clay fraction content in soil affect the physical and other properties such as base exchange and pozzolanic action.

7. The point at which plastic limit increase and then decrease is __________
a) Lime point
b) Fixing point
c) Lime fixation point
d) Lime reducing point
Answer: c
Clarification: The plastic limit in lime stabilized soils, increase up to a certain point and then decrease, it is termed as lime fixation point.

8. The chemical which causes burns while working with is __________
a) Quick lime
b) Hydrated lime
c) Quick cement
d) Sulphate resistant cement
Answer: a
Clarification: The quick lime is very effective in stabilisation, but it causes burns, so hydrated lime is preferred.

9. The compaction is carried out at __________
a) 6% Water content
b) OMC
c) MDD
d) Saturated density
Answer: b
Clarification: The strength is a very important factor considered in the soil lime stabilisation, so it is compacted at OMC to achieve MDD.

10. The strength of soil lime for several years after curing __________
a) Increases
b) Decreases
c) Remains constant
d) Can’t say
Answer: a
Clarification: The lime soil strength increases with an increase in curing period unless and until effected by external sources its strength increases.

11. The substance added with lime for extra strength are called __________
a) Fertiliser
b) Additive
c) Plasticiser
d) Super plasticiser
Answer: b
Clarification: The strength of lime alone is not enough for the stabilisation, so special substances called additives are added.

12. The design of soil lime mix is based on __________
a) BIS
b) PAC
c) ASTM
d) Lime fixation point
Answer: d
Clarification: The design of lime soil mix is based on lime fixation point, as it has no specific method for design.

13. What is the first step in the construction step of soil lime base course is?
a) Preparation of sub grade
b) Preparation of pulverised soil
c) Field tests
d) Pre conditioning
Answer: a
Clarification: The first step after design of the mix is preparation of the sub grade followed by pulverising.

14. The lime soil can’t be used in __________
a) Sub base
b) Base
c) Surface
d) Sub grade
Answer: c
Clarification: The lime soil is very weak and cannot be used in the surface course, it can only be used in light traffic areas.

15. Increase in lime content results in __________
a) Decrease in plastic limit
b) Decrease in plasticity index
c) Increase in plasticity index
d) Change in volume
Answer: b
Clarification: The increase in lime content will cause a slight change in the plastic limit, increasing the plastic limit and decrease of plasticity index.

250+ TOP MCQs on Hydrologic Analysis and Answers

Highway Engineering Multiple Choice Questions on “Hydrologic Analysis”.

1. The design aspects of the surface drainage system are classified into how many types?
a) One
b) Two
c) Three
d) Four
Answer: b
Clarification: The design aspects are classified into hydrological and hydraulic analysis, these two are the important aspects of drainage system.

2. What is the objective of hydrological analysis?
a) Estimate maximum quantity of water
b) Design
c) Maintenance
d) Repair of CD structural defects
Answer: a
Clarification: The main aim of hydrological analysis is to estimate the maximum quantity of the water reaching the pavement.

3. The portion of water which flows on surface is called __________
a) Run off
b) Catchment
c) Percolated water
d) Storm water
Answer: a
Clarification: The portion of the water flowing on the surface after percolation into the ground and remaining on surface is called run off.

4. The factors not affecting run off is?
a) Intensity of soil
b) Type of soil
c) Topography of soil
d) Type of road
Answer: d
Clarification: The run off is not afford by type of road, in national highway and state highway there may not be having more run off but they don’t affect the runoff.

5. The number of steps followed for surface drainage system is __________
a) One
b) Two
c) Three
d) Four
Answer:d
Clarification: The four steps include collection, finding the drainage, determine the run off and to estimate peak quantity.

6. The rational formula is __________
a) Q=CiA
b) Q=ki
c) Q=AV
d) Q= CA
Answer: a
Clarification: The rational formula is given by Q=CiA where, Q is the run off, C is the run off coefficient and A is the area of the drainage.

7. The value of C is taken as ____ for bitumen pavements.
a) 1
b) 2
c) 0.9
d) 0.95
Answer: c
Clarification: The run off coefficient may be taken as 0.9 for bitumen and CC pavements, as in these pavements water is drained off very easily.

8. What is the minimum velocity required in drainage to maintain flow?
a) Self cleaning velocity
b) Sewage velocity
c) Gradient velocity
d) Maximum velocity
Answer: a
Clarification: The minimum velocity in which the water can flow with out any pressure is called as self cleaning velocity.

9. The area of the drainage is expressed in __________
a) 10 sq.km
b) 100 sq.km
c) 1000 sq.km
d) 10000 sq.km
Answer: c
Clarification: The drainage area is calculated for every 1000 sq.km for the drainage area present in the locality.

10. For a bitumen pavement calculate the discharge in m3/sec if intensity of the rainfall is 40 mm/sec and area of drainage is 100 m2.
a) 360
b) 36
c) 3.6
d) 0.36
Answer: c
Clarification: Q=CiA
Q=0.9*40*100
Q=3.6m3/sec.

250+ TOP MCQs on Preparation of Detailed Project Report and Answers

Highway Engineering Multiple Choice Questions on “Preparation of Detailed Project Report”.

1. The DPR consists of how many components?
a) One
b) Two
c) Three
d) Four

Answer: c
Clarification: The DPR consists of report, estimate and drawing making it three components.

2. The first step in the detail checklist of DPR is ___________
a) Executive summary
b) Background
c) Roadway features
d) General details of the project

Answer: a
Clarification: The executive summary is the details that are prepared after the field work in the site has been completed.

3. The name of the work and project details is managed under which category of DPR?
a) Executive summary
b) Background
c) Roadway details
d) General details

Answer: b
Clarification: In the background of the project name, scope of service, data source, importance and economics of the project are managed.

4. The roadway features include the study of ___________
a) Accidental analysis
b) Geometric design
c) Route alignment
d) Safety

Answer: c
Clarification: The roadway features are studied for route selection, route alignment, environmental factors, cross section elements, traffic studies.

5. The final step in the specifications and design of roadway elements is ___________
a) Specifications
b) Design elements
c) Geometric design
d) Safety and audit of the design elements

Answer: d
Clarification: After all the design requirements are calculated and if they are finalized the last step is to check the safety of the design elements.

6. Which of the following is not a structure constructed for drainage purposes?
a) Aqueduct
b) Syphon aqueduct
c) Level crossing
d) Pitot tube

Answer: d
Clarification: A pitot tube is an instrument which is used to measure the velocity of water in rivers and streams.

7. The strength of the materials can be checked by ___________
a) Visual inspection
b) Quality control
c) By asking the manufacturer
d) By referring to various codes

Answer: b
Clarification: The materials should always be tested in a laboratory for accurate and exact results quality check should always be conducted.

8. For small projects which type of method is used for the calculation of project time?
a) Milestone chart
b) Bar chart
c) PERT
d) CPM

Answer: b
Clarification: For small projects, the completion time may be evaluated by bar chart, milestone chart may be used when all the critical activities are required.

9. Which of the following is prepared first during estimate?
a) Schedule of rates
b) Rate analysis
c) Detailed cost estimate
d) Detailed project

Answer: a
Clarification: The first step in the preparation of estimates is a schedule of rates followed by rate analysis and detailed cost estimate.

10. The site amenities are covered under which of the items of DPR?
a) Background
b) Abstract
c) Miscellaneous
d) Estimate

Answer: c
Clarification: The site amenities, diversion of roads, road side plantation and other facilities are covered under miscellaneous items, background and abstract are the important aspects, estimate are also very important.

250+ TOP MCQs on Design of Parking Facility and Answers

Highway Engineering Multiple Choice Questions on “Design of Parking Facility”.

1. The best type of interchange can be provided with __________
a) Rotary
b) Diamond
c) Partial cloverleaf
d) Full cloverleaf
Answer: d
Clarification: Full clover leaf interchange provides all the required facilities for interchange and it is the most convenient to use.

2. A grade intersection may be provided if the PCU exceeds __________
a) 5000
b) 6000
c) 7000
d) 10000
Answer: d
Clarification: If the PCU value exceeds 10000 then the grade separators may be used as and when required.

3. The capacity of an uncontrolled intersection is __________
a) 1000 to 1200 vehicles /hour
b) 1100 to 1200vehilces/hour
c) 1200 to 1400 vehicles/hour
d) 1400 to 1600 vehicles/hour
Answer: c
Clarification: The capacity of an uncontrolled intersection is 1200-1400 vehicles/hour if there is no traffic signal or police to control it.

4. The ramps in the grade separated intersections do not include __________
a) Direct
b) Semi direct
c) Indirect
d) Cloverleaf
Answer: d
Clarification: Clover leaf is a type of inter change, it is not an intersection, whereas all the remaining are a type of intersection.

5. The product of fast moving vehicles and number of trains should exceed by how much to justify the bypass road construction?
a) 25000
b) 5000
c) 50000
d) 250000
Answer: a
Clarification: If the product of fast moving vehicles and number of trains should exceed by 25000 then we have to justify the bypass road construction and if it exceeds 50000 it is mandatory.

6. Parking facilities may be classified into how many types?
a) One
b) Two
c) Three
d) Four
Answer: b
Clarification: The parking facilities are classified into two types, they are on street and off street parking.

7. The type of parking in which the vehicles are parked along the kerb is called __________
a) Kerb parking
b) Off-street parking
c) Parallel parking
d) Angle parking
Answer: a
Clarification: The type of parking in which the vehicles are parked along the kerb is called kerb parking.

8. Which type of parking facility is convenient for all types of users?
a) Kerb parking
b) Off-street parking
c) Parallel parking
d) 90 degree parking
Answer: d
Clarification: The 90 degree parking is most convenient for users as it is easy to park and easy to handle even for new users.

9. The maximum number of cars can be parked in __________
a) Kerb parking
b) Off-street parking
c) Parallel parking
d) 90 degree parking
Answer: c
Clarification: The maximum number of vehicles can be accommodated for same length in parallel parking.

10. The number of parking spaces for a kerb of 59m and having the length of car as 5.0m is?
a) 9
b) 10
c) 11
d) 12
Answer: b
Clarification: Number of parking spaces = 59/5.9
=10
Here, extra width of 0.9m is considered, because the vehicles cannot be parked very close.

11. The first stage of the parking lot is __________
a) Entrance
b) Acceptance
c) Storage
d) Delivery
Answer: a
Clarification: The first stage of parking lot is entrance followed by acceptance, storage, delivery and exit.

12. The parking facility in which elevators are required to change to a different level is called __________
a) Parking lot
b) Multi storeyed building
c) Clover leaf junction
d) Ramp
Answer: b
Clarification: In multi storeyed buildings, usually in tall buildings there is an elevator provided to change the level of parking.

13. In 90 degree parking the length of kerb is 25m, the parking spaces are __________
a) 10
b) 11
c) 12
d) 13
Answer: a
Clarification: Parking spaces in 90 degree parking=25/2.5
=10

14. The place allotted particularly for only parking is called __________
a) Parking lot
b) Parking space
c) Clover space
d) Traffic parking
Answer: a
Clarification: The place allotted particularly for only parking is called as parking lot.

15. The most inconvenient method for parking is __________
a) 30 degree parking
b) 45 degree parking
c) 90 degree parking
d) Parallel parking
Answer: a
Clarification: 30 degree parking is the most inconvenient as everyone cannot turn in this angle. 90 degree parking is convenient and in parallel most cars can be handled.