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Old 04-07-2004, 12:56 AM   #3
ydant
Scooby Guru
 
Member#: 43447
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Herndon, VA
Vehicle:
2009 STI
The Good Grey

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The signs appear to use K-band around here to determine when they should display their message (vehicle detection).

It costs a lot of power to run those lights, and the signs are solar/battery powered.

Some of them even have the ability to display vehicle speed. One on the DOE complex where I used to work would even calculate your speeding ticket amount...

-y
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