> It is actually illegal to be going that slow on a highway, in Texas at least. This would simply be too dangerous to even allow. So does the Texas Highway Pa

> It is actually illegal to be going that slow on a highway, in Texas at least. This would simply be too dangerous to even allow. So does the Texas Highway Patrol ticket everyone in a traffic jam? They almost certainly don't, which should be a big clue that it's not so simple. This appears to be the actual law in Texas: https://texas.public.law/statutes/tex._transp._code_section_545.363 https://texas.public.law/statutes/tex._transp._code_section_... > (a) An operator may not drive so slowly as to impede the normal and reasonable movement of traffic, except when reduced speed is necessary for safe operation or in compliance with law. > ... > (c) If appropriate signs are erected giving notice of a minimum speed limit adopted under this section, an operator may not drive a vehicle more slowly than that limit except as necessary for safe operation or in compliance with law. It's not safely operating a vehicle to go 40mph in 10mph traffic.