Fridge on propane while driving

I am the RV doctor and the guy from tv education 101 say leave it off. I was on the fire dept for 30 years and fought several rv fires that started in the back of the fridge because they thought it would never happen to them. come to my town and see the new rebuilt gas station we have because of a motor home fridge was left on and he gassed up and burned the place down and a ups truck refueling next to him. there are some tunnels back east that tell you to turn off your propane when going through the tunnel. must be a good reason for that, right?? In my mind there are a lot of people who think it's ok because they have gotten away with it for years. their turn is coming. Murphy will see to that. I use freezable ice packs to put int he fridge between the food when I travel and at night when sleeping I refreeze the packs for the next travel day