baltimore harbor tunnel

Just before the tunnel the State Police are standing to wave off campers and such onto a small exit road. Check your license etc. Then direct you to the Key Bridge.

Done it-been there.

It used to be OK to go through if you stopped, shut off the tank and had it tagged. Not sure if they still do that but it's well worth the minimal effort if it's still an option.

Wouldn't do it...been that way many times.

Don't do it. Simple. They will catch you. A trailer or RV will stick out and the go around is easy.