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SPEED MONITORING TECHNOLOGIES
Other Speed Detection Systems
Several techniques other than radar or laser are used to
measure vehicle speeds. When these methods are being
used, no detector can provide a warning. These techniques
include:
• Pacing - A patrol car drives behind you and matches your
driving speed.
• Vascar/Aircraft - The time it takes a vehicle to travel a
known distance is measured.
Radar Detector Detectors
The Interceptor VG-2, or simply VG-2, is a microwave receiv-
er used by police to detect signals radiated by the local
oscillator of a radar detector. Because its purpose is to iden-
tify persons driving with radar detectors, the VG-2 is known
as a "radar detector detector".
The VG-2 is the primary tool used by the police to identify
radar detector equipped vehicles. If caught in a state where
detectors are illegal (see pg. 18), drivers risk losing their
radar detector and receiving a fine. In addition, instant-on
radar is almost always used in combination with a VG-2,
leaving unsuspecting motorists vulnerable to receiving two
tickets — one potentially for speeding, the other for pos-
session of a detector.
Having a radar detector capable of detecting the VG-2 may
alert you to the presence of a speed trap.
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