07-11-2011, 01:47 PM
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#1 (permalink)
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Track Member
Join Date: Jul 2010
Location: Sandy Hook, CT
Posts: 972
Drives: Nissan 370z Nismo
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Quote:
Originally Posted by Econ
long island's ocean parkway usues air rader.
every quarter mile there is a horizontal hashmark...when you pass it they time you till you reach the next hash mark (1/4 mile away), and divide your time by distance, and come up with your speed...
they dont do this very often as airplanes/helicopters are not cheap to run...
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Yup, they have these marks on some roads in CT also.... That is exactly how they figure the speed...
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