Yes, the tunnels in the Hampton Roads are like that. A VDOT worker will take down your license plate number, and then ask if your tanks are off. They may not even ask to check if you tell them they are off...they didn't a couple of weeks ago when I went through. Sometimes, they want to check anyway.
We usually stop at the Williamsburg rest area for a pit stop, and I will cut the tanks off there. On the way back, I cut the tanks off when leaving the campground, and then cut them back on at the next stop after the tunnel. If you need to, you can cut the tanks off there at the VDOT check station.
There is marked pull-off before every tunnel where you need to stop.
I will cut my fridge off at the panel 1st to save it trying to reignite the flame....unsuccessfully.
Chap , DW Joy, and Fur Baby Sango
2006 Ford F150 Super Cab 4x4
2008 Surveyor 263