Week 9 (RADAR)
When externally testing a radar device in the moving mode, the target window readout will indicate ______ mph if you simultaneously activated a 35 mph and 65 mph tuning fork.
30
If a vehicle is traveling 54 mph what its velocity is
79 FPS
What is a requirement to obtain a conviction in a speeding offense
An estimate of the violator's speed
The concept of tracking history evolved from what?
Case law
An approaching vehicle reflects the signal from the radar and does what to the waves?
Compresses
The ABC of setting up a radar refers to
Connect the Antenna to the Box, then to the Current
Unconstitutional
Contrary to some provision of the state or federal constitution
Due to judicial notice the operator need NOT testify to the accuracy of the particular speed measurement device he or she used for speed reading (True or False)
False
Radar will always display the vehicle closest to the radar (True or False)
False
If several vehicles are in range, radar will always pick out the speed of the vehicle that is:
None of the above
What will not affect Radar?
RF Interference, High Voltage Lines, and Range Control.
The term RADAR stands for?
Radio detection and ranging
Adverse weather conditions such as rain or snow tend to ________ radar range.
Reduce
Once transmitted, the length of the RADAR beam is infinite unless it is?
Reflected, absorbed, or refracted
Which of the following is the correct order of priority criterion the radar instrument uses to base its decision making
Reflective capability, position, speed
The basic speed computation in using opposite direction moving RADAR is
Target Speed = Closing Speed Minus Patrol Speed
A larger percentage of reported traffic fatalities occur on local roads than on the highway system (True or False)
True
Trespass:
Unlawful entry upon another
Tracking history has three major steps a radar operator should follow such as...
Visual observation Target speed confirmation Audio Confirmation
Traffic radar speed measurement devices determine vehicle speeds by measuring changes in the signal's
frequency
What is frequency?
number of waves per second
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
plus or minus one mile per hour
Moving radar uses how many transmitters?
1
The visual elements of "tracking history" are
1. identify the target 2. estimate vehicle speed 3. estimate the distance 4. check environment
The average perception/reaction time for most drivers is
1.5 seconds
K-band radar signal shifts _____cycles per second for each mile per hour of speed indicated on the radar instrument
72
Venue
County in which offense occurred and in which trial must take place
Radar uses speed as the major determining factor for target selection (True or False)
False
Speed enforcement detection techniques such as RADAR detectors and flashing headlights create a halo effect which serves to increase the compliance with speed laws. (True or False)
TRUE
What effects cause erroneous speed indications
electrical, mechanical, operational
A vehicle traveling at 50 mph will travel approximately ______ feet during a 1.5 second reaction time.
110
When operating moving radar, the operator should remember
All of the above
