TRAFFIC ENGINEERING

TRAFFIC ENGINEERING

By WINCENTRE CLASSES

Multiple Choice

Which of the following is NOT one of the 3 E's of traffic engineering?

• Engineering
• Education
• Economics
• Enforcement

Explanation Slide...

The 3 E's are Engineering, Enforcement, and Education. Economics is not part of them.

Multiple Choice

Which of the following is NOT one of the 3 E's of traffic engineering?

• Engineering
• Education
• Economics
• Enforcement

Explanation Slide...

The 3 E's are Engineering, Enforcement, and Education. Economics is not part of them.

Multiple Choice

Which of the following is a psychological factor affecting road user characteristics?

• Vision
• Hearing
• Aggressiveness
• Fatigue

Explanation Slide...

Aggressiveness is considered a psychological factor, while others are physical.

Multiple Choice

What is the unit of traffic volume?

• km/hr
• vehicles/hr
• PCU/km
• vehicles/day

Explanation Slide...

Traffic volume is measured as the number of vehicles passing a point per hour.

Multiple Choice

PCU stands for:

• Passenger Car Unit
• Passenger Cargo Unit
• Public Car Unit
• Private Car Utility

Explanation Slide...

PCU is Passenger Car Unit, used to express highway capacity in equivalent car units.

Multiple Choice

Which device is most efficient for measuring spot speed?

• Enoscope
• Radar meter
• Photographic device
• Stopwatch

Explanation Slide...

Radar meters are the most efficient and accurate devices for measuring spot speed.

Multiple Choice

Which chart shows the variation of traffic volume over hours and seasons?

• Trend Chart
• Flow Volume Diagram
• Variation Chart
• Histogram

Explanation Slide...

Variation charts display hourly, daily, and seasonal variations in traffic volume.

Multiple Choice

Assertion (A): 30th Highest Hourly Volume is used for Design Hourly Traffic Volume (DHTV). Reason (R): It excludes extreme peak volumes not representative of regular traffic.

• Both A and R are true, and R is the correct explanation of A
• Both A and R are true, but R is not the correct explanation of A
• A is true but R is false
• A is false but R is true

Explanation Slide...

30th highest hourly volume balances design for realistic heavy traffic without overdesign.

Multiple Choice

Which of the following is used to determine origin and destination data?

• Floating car method
• Radar meter
• Desire lines
• Stopwatch method

Explanation Slide...

Desire lines graphically represent trips from origin to destination in O&D studies.

Multiple Choice

Which method is not used for speed and delay study?

• Floating car method
• License plate method
• Interview method
• Stop line survey

Explanation Slide...

Stop line survey is used for intersection control, not for speed and delay study.

Multiple Choice

Parking turnover is defined as:

• Number of vehicles per parking bay
• Parking load / parking duration
• Vehicles per parking bay over time
• Vehicles x time parked

Explanation Slide...

Turnover is the number of vehicles using a bay during a set time period.

Multiple Choice

Which parameter is used to evaluate road user cost in traffic engineering?

• Speed
• Delay
• PCU
• Flow

Explanation Slide...

Delay directly affects the road user cost by increasing travel time and fuel usage.

Multiple Choice

Which of the following helps in determining the most suitable route for traffic?

• Spot speed study
• Speed and delay study
• O-D study
• Parking study

Explanation Slide...

O-D (Origin-Destination) studies help understand traffic patterns and decide best routes.

Multiple Choice

Which of the following indicates vehicle performance?

• Stopping sight distance
• Speed
• Acceleration and deceleration
• Headway

Explanation Slide...

Acceleration and deceleration are indicators of vehicle performance in traffic flow.

Multiple Choice

Which of the following is NOT a traffic volume study method?

• Manual count
• Photographic method
• Radar gun
• Mechanical counter

Explanation Slide...

Radar guns are used for speed measurement, not traffic volume counting.

Multiple Choice

What is meant by headway in traffic flow?

• Number of vehicles per unit time
• Distance between two limits of study area

• Time between successive vehicles
• Speed of a vehicle

Explanation Slide...

Headway is the time gap between the front bumpers of two successive vehicles.

Multiple Choice

Which instrument is used in the moving car method?

• Stopwatch
• Speedometer
• Odometer
• All of the above

Explanation Slide...

Stopwatch, speedometer, and odometer are used in the moving car method for delay studies.

Multiple Choice

What does saturation flow mean?

• Max traffic under ideal conditions
• Min traffic volume
• Traffic flow at peak hours
• Zero volume condition

Explanation Slide...

Saturation flow is the max flow rate possible through an intersection under ideal conditions.

Multiple Choice

What is the PCU value of a truck as per IRC recommendations?

• 2.5
• 2.0
• 3.0
• 1.5

Explanation Slide...

As per IRC, a truck is equivalent to 3.0 PCUs under average Indian road conditions.

Multiple Choice

Which traffic parameter is used to compute road capacity?

• Speed
• Volume
• Density
• All of the above

Explanation Slide...

All three — speed, volume, and density — are used in road capacity analysis.

Multiple Choice

What is the key objective of a parking study?

• Assess travel speed
• Reduce collisions
• Analyze demand and usage pattern of parking spaces
• Design road width

Explanation Slide...

Parking studies are conducted to analyze availability, usage, and demand of parking spaces.