16 hours is generally not allowed unless there are severe adverse conditions, but it's only recently with ELD (Electronic Logging Device) mandates that these rules are being forced to a degree. Before that, many drivers would simply go as many hours as they humanly could to keep moving.
See: https://www.fmcsa.dot.gov/regulations/hours-service/summary-...
They would keep multiple overlapping logbooks so they could always present a "legitimate" log to DOT.
This was a while ago and I was absolutely shocked. In Europe they'd impound your truck.
much of my extended family was in teh trucking industry one way or the other. Before the electronic books you had manual log books. Lying in your log book was a very big deal, i want to say you could get in trouble with the law in addition to getting fired. Before that though it was even more the wild west than it is now. My step-father knew my grandfather's "outfit" and he would joke that if they had a chain long enough to go around it they would haul it no questions asked.
This is from a popular 90s country song:
sleep would be best
but i just can't afford to rest
have to be in Denver at morning light
- much too young to feel this damn old