Idiot-proofing low clearances with water curtain stop signs

[Kasey_Greene]

@kwhitefoot

Surely it’s simpler to just hang a sign on chains at just the height in question about 50m in front of the bridge so that anyone driving a vehicle that is too high will be rudely awakened.

Sounds like common sense; I know it wouldn’t work w/ the US Govt. (who would profit?)