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Disappearing Speed Bumps | |||||||||||||||||
Develop a speed bump that recedes for vehicles approaching at or below the posted speed limit.
rdy4trvl, Dec 28 2005
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If it can be done cheaply enough, then ok. I think it'd be very prohibitively expensive, however.
It would require two sensitive points in the road to measure the time of passage plus the speed bump which would flip up when the passage time was less than the permitted speed.