NHTSA EXAM QUESTIONS WITH VERIFIED ANSWERS| LATEST UPDATE GRADED A+
Which of the following will affect the range of radar. rf interference, high voltage lines,
range control (all of the above)
The A-B-C of setting up a radar unit refers to: connect the antenna to the box or counting
unit then to current
In order for the radar operator to successfully complete the "external tuning fork test", a
stationary radar device must measure a tuning fork's stamped speed: within 1 MPH
When externally testing a radar device in the moving mode, what will the target window
readout indicate if you have simultaneously activated a 35 mph and 65 mph tuning fork? 30
(high # - Low #)
Tuning forks may be exchanged between different radar sets operating in the same band.
true (has to be the same band)
You should externally test your radar device once a week. false (beginning and end of shifts)
The following effects may cause erroneous speed indications: electrical, mechanical,
operational (EMO)
The feedback (or scanning effect) is possible with all radar sets, regardless of design. false (
only with two-piece sets)
The Batching effect only occurs if the patrol vehicle has a sudden change in velocity while using
moving radar. true
Adverse weather conditions such as rain or snow tend to ______ radar range. reduce
, The concept of tracking history evolved from what? case law
The word "lidar" stands for light doppler and ranging. false (light detection and ranging)
A lidar signal's beam length is infinite unless reflected, refracted, or absorbed by some object in
its path. true
Lidars' units are examples of this type of laser. semiconductor laser
a lidar unit will display the speed of the target of the operator's choice
A lidar unit uses the Doppler principle to measure a vehicles speed. false
Vehicle speed is equal to the lapsed time divided by the distance traveled. false (opposite)
(distance/time)
the speed of a laser beam is equal to the speed of light
The speed of a lidar signal is always equal to the speed of light. true
A LIDAR signal's frequency is: the number of waves sent out in one second
Lidar use a lower frequency beam than radar. false (lidar uses the highest frequency)
A lidar units accuracy is affected by color, dull or dirty finish, rain/fog/smoke (none of the
above)
Which of the following will affect the range of radar. rf interference, high voltage lines,
range control (all of the above)
The A-B-C of setting up a radar unit refers to: connect the antenna to the box or counting
unit then to current
In order for the radar operator to successfully complete the "external tuning fork test", a
stationary radar device must measure a tuning fork's stamped speed: within 1 MPH
When externally testing a radar device in the moving mode, what will the target window
readout indicate if you have simultaneously activated a 35 mph and 65 mph tuning fork? 30
(high # - Low #)
Tuning forks may be exchanged between different radar sets operating in the same band.
true (has to be the same band)
You should externally test your radar device once a week. false (beginning and end of shifts)
The following effects may cause erroneous speed indications: electrical, mechanical,
operational (EMO)
The feedback (or scanning effect) is possible with all radar sets, regardless of design. false (
only with two-piece sets)
The Batching effect only occurs if the patrol vehicle has a sudden change in velocity while using
moving radar. true
Adverse weather conditions such as rain or snow tend to ______ radar range. reduce
, The concept of tracking history evolved from what? case law
The word "lidar" stands for light doppler and ranging. false (light detection and ranging)
A lidar signal's beam length is infinite unless reflected, refracted, or absorbed by some object in
its path. true
Lidars' units are examples of this type of laser. semiconductor laser
a lidar unit will display the speed of the target of the operator's choice
A lidar unit uses the Doppler principle to measure a vehicles speed. false
Vehicle speed is equal to the lapsed time divided by the distance traveled. false (opposite)
(distance/time)
the speed of a laser beam is equal to the speed of light
The speed of a lidar signal is always equal to the speed of light. true
A LIDAR signal's frequency is: the number of waves sent out in one second
Lidar use a lower frequency beam than radar. false (lidar uses the highest frequency)
A lidar units accuracy is affected by color, dull or dirty finish, rain/fog/smoke (none of the
above)
