12-19-2012, 08:55 AM
I have often wondered why not use an electric eye 1/4 mile before the underpass wired to the traffic light or large flashing warning sign that would be activated only with clearance violation. to simple?
There is an underpass near me where the road dips down to go under the track. It has a 14' clearance which is correct. But when a 13'6" tractor trailer goes under the tractor starts going up before the trailer stops going down. The result is trucks stuck under it with out hitting it and no violation. I have seen trailers broken in half there from combination of heavy load and compromised trailer structure.
There is an underpass near me where the road dips down to go under the track. It has a 14' clearance which is correct. But when a 13'6" tractor trailer goes under the tractor starts going up before the trailer stops going down. The result is trucks stuck under it with out hitting it and no violation. I have seen trailers broken in half there from combination of heavy load and compromised trailer structure.
Les
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