RADAR/LASER COURSE EXAM
2025 QUESTIONS AND ANSWERS
100% PASS
The total stopping distance is a combination of - ✔✔reaction time and braking distance
The higher the speed, the longer the - ✔✔stopping distance
Major types of speed regulations include - ✔✔• basic speed law
• absolute speed law
Basic Speed Law definition - ✔✔No person shall operate a vehicle in excess of a speed
that is safe and prudent for the conditions that exist at that time.
Absolute Speed Law definition - ✔✔is a given speed limit that is in force at all times
regardless of environmental conditions. Absolute speed regulations are based on
scientific studies and data.
Safety considerations include - ✔✔· officer safety
· motorist/public safety
The basic formula for computing speed from time and distance is - ✔✔• Speed equals
Distance divided by Time, or S = D/T
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
, the apparent movement of a fixed object when the viewer changes their position. -
✔✔Parallax
Radio Detection And Ranging is? - ✔✔RADAR
Radio waves transmitted by a police traffic radar device are characterized by - ✔✔•
signal speed (speed of light)
• wavelength
• frequency
• Wavelength x Frequency = Speed of Light
the speed at which a radio wave travels, which is 186,282 miles per second, or the speed
of light. - ✔✔Signal speed
the distance from the beginning of a peak to the end of a valley of a radio wave. -
✔✔Wavelength
the number of individual waves transmitted in one second. - ✔✔Frequency
the basic Doppler Principle: - ✔✔• Relative motion is motion toward or away from the
radar.
• The frequency of a radar signal changes due to relative motion.
• The amount of frequency change is dependent upon the speed of a vehicle.
72 cycles per second (cps) per one mile per hour. - ✔✔K band
99.6 to 105.4 cycles per second (cps) per one mile per hour. (103[cps] per one mile) -
✔✔Ka band
3 Principles of Radio Waves (they will travel forever unless:) - ✔✔• reflected—They
bounce off an object.
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 2
2025 QUESTIONS AND ANSWERS
100% PASS
The total stopping distance is a combination of - ✔✔reaction time and braking distance
The higher the speed, the longer the - ✔✔stopping distance
Major types of speed regulations include - ✔✔• basic speed law
• absolute speed law
Basic Speed Law definition - ✔✔No person shall operate a vehicle in excess of a speed
that is safe and prudent for the conditions that exist at that time.
Absolute Speed Law definition - ✔✔is a given speed limit that is in force at all times
regardless of environmental conditions. Absolute speed regulations are based on
scientific studies and data.
Safety considerations include - ✔✔· officer safety
· motorist/public safety
The basic formula for computing speed from time and distance is - ✔✔• Speed equals
Distance divided by Time, or S = D/T
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
, the apparent movement of a fixed object when the viewer changes their position. -
✔✔Parallax
Radio Detection And Ranging is? - ✔✔RADAR
Radio waves transmitted by a police traffic radar device are characterized by - ✔✔•
signal speed (speed of light)
• wavelength
• frequency
• Wavelength x Frequency = Speed of Light
the speed at which a radio wave travels, which is 186,282 miles per second, or the speed
of light. - ✔✔Signal speed
the distance from the beginning of a peak to the end of a valley of a radio wave. -
✔✔Wavelength
the number of individual waves transmitted in one second. - ✔✔Frequency
the basic Doppler Principle: - ✔✔• Relative motion is motion toward or away from the
radar.
• The frequency of a radar signal changes due to relative motion.
• The amount of frequency change is dependent upon the speed of a vehicle.
72 cycles per second (cps) per one mile per hour. - ✔✔K band
99.6 to 105.4 cycles per second (cps) per one mile per hour. (103[cps] per one mile) -
✔✔Ka band
3 Principles of Radio Waves (they will travel forever unless:) - ✔✔• reflected—They
bounce off an object.
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 2
