I was recently on a trip, driving through Tennessee and came up on a bunch of semis going about 40mph down the interstate with their hazards on. There were one or two trucks that were still going regular speed, but most of them had slowed down. After about 1-2 miles I came to a sign that read
End Truck Zone and the semis went back to regular speed. I never saw a sign saying where the truck zone begins.
I tried to look it up online, but there are no results on Google for
"End Truck Zone" (with quotes), and most sites were just referencing the safe zone around a semi truck.
The closest thing I could find is in Australia. They have
Truck Zone signs that say it's legal for trucks to park on the side of the road in that area. That would make sense in this situation, since all the trucks were going slower, like there might be another truck on the side of the road, but I didn't see any.
I also drove back the same way on the way home, and the experience was the same. Didn't see a beginning sign, most trucks driving slowly with their hazards on, no trucks on the side of the road, and back to regular speed after the
End Truck Zone sign.
So, what is the purpose of this zone?