time2roll wrote:
ford truck guy wrote:
I went in and an inspector came out with their yellow and orange rain coat and clip board to WATCH me turn OFF the propane at each bottle..
did that, was good to go, merged into traffic and 1/8 to 1/4 mile later I was OUT of the tunnel :S
The tunnel has a dip that can collect the heavier than air propane.
Of course, if that's the case, it has a ventilation system so the heavier than air CO2 doesn't build up...not to mention vehicles cruising at 30-60mph will move a surprising amount of air.
Mostly, it's a CYA.