Above average height vehicles?

That's before the split into downtown

 

If you got a high cube container on a gooseneck chances are you will be just a little bit at or higher than that laser beam.

Baltimore uses it to protect their I-895 old fort tunnel past the split. Anyone breaking it has to take the Pulaski Exit. That tunnel is actually 13.5 because it will damage the roof which is not acceptable because you in that particular one are actually inside a tube within a tube buried in the seabed.

 

Yes the bridge protecting the split scans all trucks with a laser beam built into it at 13.6 if you snap the beam for being too high then a billboard is lit in front of you ordering you off at the next exit when you trip the next one far enough down past the split towards I-895.

If they are protecting a bridge with active lights known to be lower than 13.6 or whatever then you have to get off where the signs tell you to go. You do not want to hit it and be derided like another 11.8 bridge idiot.

 

Have you ever measured your height?
Most box haulers never have.
Legal height in Texas is 14’

 

Sorta. Not always.

Another bridge in Mechanicsburg east PA was signed for 13.6 for that particular road by PennDOT but they had recently added about 6 inches of blacktop under it. So it's 13.0 and failed to update the signage.

A local lawman lassoed me as soon I made the turn. We spent some time arguing about that stupid bridge until he finally explained to me why we are going through all this. I figure he saved my life and Boss a whole lot of damage that day.

 

13"5 on 22.5lp and about 13"8 to 13"9 pulling a van with truck on tall 24.5

 

Ohio toll road had 1, overweight, take the scenic route.