1. What is the use of second wire loop on the Magnetometer?
a) To detect passage
b) To detect presence
c) To detect speed
d) To detect density
Explanation: The use of the second wire loop on the Magnetometer is to detect presence. Magnetic sensor has limited application since they are passage only magnetic detectors.
2. Aerial photography uses which basic platform?
a) A stationary elevated vantage point
b) Satellite
c) Skydiving
d) Hot air balloon
Explanation: Aerial photography uses three basic platforms. They are i) A stationary elevated vantage point, ii) fixed wing aircraft and iii) helicopters.
3. Which process captures individual vehicle traces through the photographed segment?
a) Aerial photography
b) Digitizing
c) Operating
d) Tracing
Explanation: The process which captures individual vehicle traces through the photographed segment is called digitizing. This process needs two or more fixed objects whose coordinates are known in every frame captured.
4. Which is the most desirable platform for aerial photography?
a) Elevated vantage point
b) Fixed wing aircraft
c) Helicopters
d) Satellite
Explanation: Elevated vantage point is the most desirable platform for aerial photography because throughout the study the camera is fixed. Aircraft and helicopters need to move and hover around which makes the camera non-stationary, which is not desirable for surveying.
5. Which is the most suitable study for information on trip purpose?
a) Traffic counting
b) Interview study
c) Parking counts
d) Tracking
Explanation: The most suitable study for information on trip purpose is Interview study. Some of the interview studies are Roadside interview, Comprehensive home interview, and destination based interview.
6. In which of the following interview study traffic is disrupted?
a) Roadside interview
b) Comprehensive home interview
c) Destination-based interview
d) Parking survey
Explanation: In Roadside interview study, traffic is disrupted. The drivers are stopped to ask questions, in this survey. Therefore they are usually conducted near traffic signals so that traffic is not interrupted. Comprehensive home interview and Destination-based interview doesn’t disrupt traffic movement.
7. Which of the following is not a factor that affects PRT?
a) Age
b) Presence of alcohol in driver’s system
c) Fatigue
d) Vehicle accommodation
Explanation: Age, presence of alcohol in driver’s system and fatigue are some of the factors that affect Perception Reaction Time (PRT) of a driver.
8. Within which field of vision should traffic signs be placed without the drivers having to change their line of sight?
a) Acute vision field
b) Fairly clear vision field
c) Peripheral vision field
d) Obtuse vision field
Explanation: Traffic signs are to be placed in acute vision field so that the drivers can see them without changing their line of sight. As a result, they are set within a range of 3° – 10° around the line of sight.
9. What is the correct order of the four distinct processes a driver has to perform during perception and reaction time?
a) Detection, Identification, Decision, and Response
b) Detection, Decision, Identification, and Response
c) Identification, Detection, Decision, and Response
d) Identification, Decision, Detection, and Response
Explanation: The correct order of the four distinct processes a driver has to perform during perception and reaction time is Detection, Identification, Decision, and Response. The driver first observes the object in front of the vehicle and then identifies it. Subsequently, the driver analyses the information and makes a decision and responses suitably.
10. The peripheral vision field narrows as speed decreases.
a) True
b) False
Explanation: The peripheral vision field narrows as speed increases. The peripheral vision field ranges from 120° to 180°.