All Free Civil Engineering MCQs with Answers

• A. The variation of pavement thickness along a route
• B. The movement pattern between traffic zones
• C. The cross slope of a road surface
• D. The distribution of stresses beneath a wheel load

Explanation: A desire-line diagram represents the major origin and destination movements between traffic analysis zones.

• A. Final location survey
• B. Preliminary survey
• C. Reconnaissance survey
• D. Construction staking survey

Explanation: A reconnaissance survey examines the terrain, obstacles, settlements and broad route possibilities.

• A. Number of peak hours
• B. Number of working days
• C. Number of lane kilometres
• D. Number of days in the year

Explanation: AADT represents the average traffic volume for a typical day over a full year.

• A. 1,200 vehicles per hour
• B. 900 vehicles per hour
• C. 600 vehicles per hour
• D. 3,600 vehicles per hour

Explanation: Flow is the reciprocal of time headway when expressed in consistent units.

• A. Permanent deformation of the subgrade
• B. Loss of adhesion between bitumen and aggregate
• C. Formation of transverse concrete cracks
• D. Polishing of railway ballast particles

Explanation: Stripping is the separation of bitumen from aggregate, usually because water weakens the bond.

• A. Transfer wheel loads across a transverse joint
• B. Permit free expansion at an expansion joint
• C. Keep adjoining lanes from separating
• D. Reduce the required concrete thickness

Explanation: Tie bars hold adjacent concrete slabs or lanes together and prevent the longitudinal joint from opening.

• A. Rail cant
• B. Formation width
• C. Sleeper spacing
• D. Track gauge

Explanation: Track gauge is the specified distance between the inner faces of the rails.

• A. Aircraft parking, loading and servicing
• B. Aircraft takeoff and landing
• C. Controlling runway lighting systems
• D. Storing excavated runway soil

Explanation: The apron is the paved area where aircraft park and receive services such as boarding, loading, refuelling and maintenance.

• A. Increase the stopping sight distance
• B. Drain rainwater away from the pavement
• C. Reduce the length of a vertical curve
• D. Provide extra width on a horizontal curve

Explanation: Camber gives the pavement a cross slope that allows rainwater to flow toward the edges.

• A. Insufficient shoulder width
• B. Excessive road camber
• C. Insufficient superelevation
• D. Excessive vertical gradient

Explanation: Insufficient superelevation leaves too much of the lateral demand to be resisted by tyre friction, increasing the risk of outward…

• A. Permissive phase
• B. Coordination phase
• C. Flashing phase
• D. Protected phase

Explanation: A protected phase gives a movement an exclusive right of way while conflicting traffic is stopped.

• A. Sources and destinations of individual trips
• B. Number of vehicles using each pavement layer
• C. Strength of soil beneath the roadway
• D. Superelevation required on road curves

Explanation: An origin-destination survey records where trips begin and end, along with related travel information.

• A. Increased pavement drainage requirements
• B. Vehicle off-tracking and driver psychology
• C. Reduced strength of the road subgrade
• D. Greater thickness of the surface dressing

Explanation: The rear wheels of a vehicle follow a shorter radius than the front wheels, causing off-tracking on curves.

• A. One-fourth of the jam density
• B. Equal to the jam density
• C. One-half of the jam density
• D. Twice the jam density

Explanation: The Greenshields model assumes a linear relationship between speed and density.

• A. Arithmetic mean of vehicle speeds
• B. Modal value of vehicle speeds
• C. Geometric mean of vehicle speeds
• D. Harmonic mean of vehicle speeds

Explanation: Space mean speed represents the average speed over a specified road length and is calculated as the harmonic mean of individual speeds.

• A. Vehicles in the intersection to clear it
• B. Pedestrians to begin crossing early
• C. Additional vehicles to join the queue
• D. The signal controller to change its cycle

Explanation: During the all-red interval, all approaches display red so vehicles already within the intersection can leave safely.

• A. Loss of aggregate particles from the surface
• B. Upward movement of excess binder to the surface
• C. Formation of transverse cracks from shrinkage
• D. Depression caused by weak underlying soil

Explanation: Bleeding produces a shiny, smooth surface because excess bitumen rises to the pavement surface.

• A. Provide drainage through the pavement surface
• B. Increase the width available to moving vehicles
• C. Control cracking caused by concrete shrinkage
• D. Prevent vehicles from crossing the centre line

Explanation: A contraction joint creates a planned weakened plane where shrinkage and temperature-related contraction can produce a controlled crack.

• A. Stop automatically at a station platform
• B. Increase its speed on a straight track
• C. Reduce vibration between rail and sleeper
• D. Change from one track to another

Explanation: A turnout consists of track components that guide railway vehicles from one track onto another.

• A. Runway threshold
• B. Taxiway shoulder
• C. Aircraft holding bay
• D. Runway blast pad

Explanation: The runway threshold identifies the beginning of the landing surface available for aircraft operations.