what are those things?

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L.D.S.

The Bakersman
Aug 14, 2006
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Mizzourah
#8
The two lines they run judge your speed between each hit of the front tires. The single line is normally a counter to see if detours are causing other road ways to pick up traffic, or if that road is seeing larger volume in general.
 

fillyacup

Rest In Free SoCo
Sep 27, 2004
31,995
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#12
they check to see if your touching yourself in your vehicle to the ceployed cecoy of the hot chick in the jetta two cars up in the next lane