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RADAR EXAM 2025 QUESTIONS AND ANSWERS GRADED A+ The minimum number of hours of hands-on, non-law enforcement radar operation required to gain a radar operator's certification is guided by which court case State v. Wojtkowiak To sustain a conviction for speeding, a police officer must identify All the above The term RADAR is an acronym for Radio detection and ranging When the frequency of a signal is increased
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The minimum number of hours of hands-on, non-law enforcement radar operation required to gain a radar operator's certification is guided by which court case
State v. Wojtkowiak
To sustain a conviction for speeding, a police officer must identify
All the above
The term RADAR is an acronym for
Radio detection and ranging
When the frequency of a signal is increased
The number of waves per second is increased
The speed of a radar signal is changed when
None of the above
The radar signal's frequency is
The number of waves sent out in one second
New Jersey law states that the speed limit for business or residential districts, unless otherwise posted is
25 MPH
In X-band traffic radar, for every one mile per hour that a target vehicle is traveling, the reflected signal will be changed in which one of the following ways
The frequency of the reflected signal will be shifted 31.4 waves per second
To properly establish a tracking history, you should observe the target for at least
3 to 5 seconds
The reflective effect
The inability of a traffic radar unit to maintain a true patrol vehicle speed reading under severe acceleration or deceleration is referred to as the
Batching effect
Courts can and do take judicial notice of
The validity of certain scientific principles underlying Doppler radar
The cosine effect as it relates to traffic radar is
A concern since it may result in a target speed reading that is higher than the actual target speed
To be a qualified radar operator, the court requires that you have enough knowledge and training to be able to the radar device
Set up, test, and properly operate
A vehicle's total stopping distance is
Affected by the vehicle's speed and the driver's perception/reaction time
Traffic radar instruments determine vehicle speeds by measuring change in the of the radar signal
Frequency
If several vehicles are all "in range," the radar until will always display the speed of the vehicle that is the
None of the above
The prevailing New Jersey case governing the use of moving radar is
State v. Wojtkowiak
When you test a radar unit, it is good practice to
Strike the fork against a non-metallic surface
A radar's signal wavelength is
The distance between the beginning of a wave peak to the end of the wave valley
Ka-band traffic radar operates at frequencies ranging from depending upon manufacturer
33.0 GHz to 36.0 GHz
Which of the following methods of speed enforcement are prohibited by title 39 in New Jersey
Photo
Elements of a tracking history are the same for stationary and moving mode
False
When the patrol vehicle is moving and the radar is in the stationary mode, the reading that you obtain upon meeting an oncoming vehicle will most likely be the violator's speed only, displayed in the patrol window
False
The recommended method of controlling the radar's range is to tilt the antenna vertically
False
Traffic radar units will always pick up the closest moving vehicle
False
In order to issue a traffic summons, the officer must lock in the motorist's speed on the radar unit
False
Whenever a radio signal's frequency changes, its wavelength also changes
True
A moving radar unit uses the Doppler principle to measure the patrol car's own speed
True
A visual estimate of the violator's excessive speed is an optional element of the tracking history
False
Negative shift
A signal returning to the radar unit that is lower that the transmitted signal
Basic speed law
Unlawful to drive a vehicle at a speed greater that what is reasonable and prudent under existing conditions
National maximum speed limit
Speed limits enacted by Congress, but later relaxed
Absolute speed limit
Prohibits driving in excess of a posted speed, regardless of conditions
Prima facie speed limit
A speed limit that is considered reasonable, but can be challenged by the motorist
A vehicles total stopping distance is:
Affected by the vehicles speed and the drivers reaction time.
A RADAR signals frequency is:
The number of waves sent out in one second.
Traffic RADAR instruments determine vehicle speeds by measuring changes in the..........the RADAR signal.
Frequency
If several vehicles are all "in range," the RADAR unit will always pick out the speed of the vehicle that is.
1.largest 2.closest 3.fastest
None of the above is always true
The fundamental relationship of RADAR is:
Wavelength multiplied by frequency equals the speed of light
A crash at 60 mph it's......... As likely to result in a fatality as is a crash art 45 mph.
Two times
Safety
A RADAR signals wave length is:
The distance from the beginning of the wave peak to the end of the wave valley.
When operating moving RADAR, it must be remembered that:
A computed target speed could be higher than the true target speed under some conditions
The case of...... Established the minimum qualifications for RADAR operators.
Honeycutt v. Commonwealth
The basic computation involved I using a moving mode ( opposite direction) RADAR is:
Target speed= closing speed minus patrol speed
The....... Of a target vehicle is the factor usually considered to be the least dominant in determining which vehicles speed the RADAR might display.
Reflective capability
Position
Speed
To be qualified RADAR operator, you are required by the courts to have enough knowledge and training to be able to....... The RADAR device.
Set up, best and properly operate.
The case of........ Established how we can verify that a RADAR speed measurement came from a particular vehicle.
Honeycutt v. Commonwealth
In the case of,............ The courts took judicial notice of the Doppler principle for the first time.
State v. Dantonio
According to case law, in order to "pass" the external accuracy test, bye RADAR instrument must measure the tuning forks speed:
Within one mph
