These companies will say it's illegal to lie in time sheets and they'll fire you if the catch you but then they don't try to catch anything too hard and set up what you have to do so that there is no way to do it without lying on time sheets. That kind of behavior is very common for lower level workers so the company gets to eat the cake of illegal practices while protecting themselves by saying it's against policy. See all the Amazon warehouse bathroom issues.

Many companies are movie to digital timesheets where the truck figures out if you are driving or not. You pretty much just need to say 'on/off/sleeper'. Those are harder to lie on.

The correct action the companies should be doing is reviewing their routes and what is a realistic way to do them. That route from 1970 no longer is the same time frame. The driving rules have changed and so has the road layout.