A speed trap
system used to measure the speed
of a vehicle
, used mostly before radar
guns were implemented. It is an acronym
omputer and R
ecorder. Two points
are chosen on a road
, and the distance
between them is measured
. A vehicle is measured on the amount of time
they take to go between the two points, and finally their speed is calculated
from the time and distance measured.
Sometimes I see perpendicular lines drawn on the interstate, and I wonder if that's what these are. Strangely enough, if listening to an AM radio broadcast while travelling on the Florida Turnpike, I can hear a blip of static in the radio at the exact instant I cross over some of these strange perpendicular white lines.