SC Speed Measurement Device (SMD) 2026 Exam Questions with
Correct Answers
Question 1.
Environment Pro-vides _____
Correct Answer: input to the vehicle which reacts to the operator who evaluates
environment.
Question 2.
Perception Reac-tion Time Formu-la
Correct Answer: Perception + Reaction distance + Braking Distance = Total
Distance
Question 3.
Civil Violations
Correct Answer: Require a mere preponderance of the evidence.
Question 4.
Three Compo-nents of Tracking History
Correct Answer: Visual Observation Audio Confirmation Unit Confirmation
Question 5.
RADAR Dates
Correct Answer: 1842 - Christian Doppler discovers the "Doppler Principle" 1886
Heinrich Hertz is the first to observe radio waves 1935 - RADAR is developed for
use in detecting aircraft 1939 - First ground RADAR station becomes operational
- Military lifts restrictions on RADAR following WWII and attention turns to
for civilian application 1947 - Radar by law enforcement begins 1972 - RADAR
advances allowing use of speed measuring devices in moving patrol vehicle
Question 6.
RADAR 1842
Correct Answer: Christian Doppler discovers the "Doppler Principle"
Question 7.
RADAR 1886
Correct Answer: Heinrich Hertz is the first to observe radio waves
Question 8.
RADAR 1946
, Correct Answer: Military lifts restrictions on RADAR following WWII and
turns to develop-ment for civilian application
Question 9.
RADAR 1947
Correct Answer: Radar by law enforcement begins
Question 10.
RADAR 1972
Correct Answer: RADAR tech advances allowing use of speed measuring devices
moving patrol vehicle
Question 11.
Doppler Principle applies to what types of waves?
Correct Answer: Sound, Light, and Radio Waves
Question 12.
Doppler Principle
Correct Answer: The frequency of a wave is relative to the motion between the
and the observer
Question 13.
Speed of Light
Correct Answer: 186,282 Miles Per Second MPS
Question 14.
Bands in HZ and Inches
Correct Answer: X-Band - 10.525 GHz K-Band - 24.15 GHz Ka-Band - 33.4 GHz -
GHz LIDAR - 330 THz X-Band - 1.1 Inch K-Band - .49 inch Ka-Band - .34 Inch
Question 15.
X Band in HZ and Inches
Correct Answer: 10.525 GHz
1.1 Inch
Question 16.
K-Band in HZ and Inches
Correct Answer: 24.15 GHz .49 inch
Question 17.
Ka-Band in HZ and Inches
Correct Answers
Question 1.
Environment Pro-vides _____
Correct Answer: input to the vehicle which reacts to the operator who evaluates
environment.
Question 2.
Perception Reac-tion Time Formu-la
Correct Answer: Perception + Reaction distance + Braking Distance = Total
Distance
Question 3.
Civil Violations
Correct Answer: Require a mere preponderance of the evidence.
Question 4.
Three Compo-nents of Tracking History
Correct Answer: Visual Observation Audio Confirmation Unit Confirmation
Question 5.
RADAR Dates
Correct Answer: 1842 - Christian Doppler discovers the "Doppler Principle" 1886
Heinrich Hertz is the first to observe radio waves 1935 - RADAR is developed for
use in detecting aircraft 1939 - First ground RADAR station becomes operational
- Military lifts restrictions on RADAR following WWII and attention turns to
for civilian application 1947 - Radar by law enforcement begins 1972 - RADAR
advances allowing use of speed measuring devices in moving patrol vehicle
Question 6.
RADAR 1842
Correct Answer: Christian Doppler discovers the "Doppler Principle"
Question 7.
RADAR 1886
Correct Answer: Heinrich Hertz is the first to observe radio waves
Question 8.
RADAR 1946
, Correct Answer: Military lifts restrictions on RADAR following WWII and
turns to develop-ment for civilian application
Question 9.
RADAR 1947
Correct Answer: Radar by law enforcement begins
Question 10.
RADAR 1972
Correct Answer: RADAR tech advances allowing use of speed measuring devices
moving patrol vehicle
Question 11.
Doppler Principle applies to what types of waves?
Correct Answer: Sound, Light, and Radio Waves
Question 12.
Doppler Principle
Correct Answer: The frequency of a wave is relative to the motion between the
and the observer
Question 13.
Speed of Light
Correct Answer: 186,282 Miles Per Second MPS
Question 14.
Bands in HZ and Inches
Correct Answer: X-Band - 10.525 GHz K-Band - 24.15 GHz Ka-Band - 33.4 GHz -
GHz LIDAR - 330 THz X-Band - 1.1 Inch K-Band - .49 inch Ka-Band - .34 Inch
Question 15.
X Band in HZ and Inches
Correct Answer: 10.525 GHz
1.1 Inch
Question 16.
K-Band in HZ and Inches
Correct Answer: 24.15 GHz .49 inch
Question 17.
Ka-Band in HZ and Inches
