For those folks from Texas who are on this forum ...not sure if u are aware of this.
"All trailers weighing 4,500 lbs or more registered in Texas are required to have an annual safety inspection. Here's the chapter and verse from the Texas Department of Transportation
I copied this from a thread from RV.Net...which by the way is a pretty fine RV forum.
PS ...sorry do not know how to properly paste a link. Best I could do given my tech ability.