Idiot-proofing low clearances with water curtain stop signs

So the trucker drives around a blind curve with vertical embankments on either side and no shoulder, gets all the way to the tunnel entrance, and THEN Sydney get really serious about stopping him? And then I guess he’s supposed to reverse back around the curve into oncoming traffic until he finds an escape route. I can’t see anything wrong with this plan.

The 11foot8 bridge is here in town. It typically catches inexperienced drivers who aren’t used to thinking about clearance. Sydney’s technique would work like a champ here. You can stop them while they’re still at the traffic light, giving them the opportunity to turn left or right at the intersection. But that’s not going to happen. Instead we installed a huge steel i-beam that operates like a can opener, sheering the top off the trucks. I have a feeling that someday I’ll be driving a rental truck through town and it will get me.

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