What signs?
Oh yeah.....when we're going somewhere pulling the TTT, I'm usually layed back asleep in the passenger seat.
Just kidding.....but I did think they were recommendations, except on I-20 out of Shreveport, when I think they were too high. That highway was so rough, it like to beat me, our truck and trailer to death, If there was something that wasn't bolted on real well, it would now be laying along side that highway.