radar guns
Police speed checkers
Radar guns are handheld devices that measure the speed of moving objects by bouncing radio waves off them and analyzing the frequency shift.
Police use them to catch speeders: The cop clocked me at 85 with a radar gun.
They're also standard equipment at baseball games for measuring pitch speed.
- speed trapCovert enforcement for speeders
- speed limitsMaximum allowed velocities
- traffic enforcementRegulating roadway compliance
- traffic stopPolice halting a motorist
- moving violationIllegal act while driving
fines · patrol cars · velocity · miles per hour · Doppler effect · measurements · motion detectors · baseball · radars · fastball · traffic laws · signal processing · police · police officer · pitch · pitch speed · roadside · trooper
- police equipmentbadges, handcuffs, patrol cars, squad cars, batons
- Traffic Policetraffic cop, traffic stop, patrol car, traffic stops, highway patrol
- Doppler effectDoppler effect, Doppler shift, blueshift, redshift
- traffic rulesspeed limits, stop signs, traffic lights, traffic signals, road signs
radar gunsradar detectors
Electronic enforcement warning devices
countermeasures · Waze · police scanner · stealth technology · listening devices
gun, radar, Doppler radar, radiometer, radioman, radar gun, weather radar, radarscope, radiomen