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This is merely speculation, but ENRADD could be similar to the VASCAR
system used here in North Carolina, which consists of a trooper with a
computerized time/distance measuring device and two landmarks (which are
measured by the VASCAR and can be changed at will, trooper hits button when
he passes landmark, and when he passes second landmark and mashes button,
it measures distance), and to measure your speed they hit the button when
you pass the landmark, and hit it again when you pass the second and then
it spits out your speed automatically, no radar or laser is emitted to
Or to use it moving, they are under a bridge (or other landmark), and see
you coming. They drive towards you, using the start point as the first
landmark. They hit the button to end distance and start time measurement
when they pass you. When you pass under the bridge, they end time
measurement. Voila, they just measured distance and time very quickly.
They can quite easily alter the timing to show whatever speed they want to.
Get happy with the second landmark finger (he's almost there, I'll go ahead
and press the button.) (In fact there is absolutely nothing you can do to
defend against this, it is your word against troopers, and guess who wins?)
Some roads here even have lines marked into the pavement for timing
purposes. Incidentally this is more accurate at night, as the moment your
headlights pass an object, it changes illumination status rather quickly,
giving the officer a better starting and stopping point.
78 F-150 400M, 4 on floor, 4x4
86 Audi 4000CS Quattro