Perhaps cameras that feed some sort of AI vision service trained to detect how much time has been spent driving, and automatically call their boss? How else could a trucker possibly be stopped from driving so far? Lol
Off the top of my head, I was thinking a simplistic CAPTCHA-like device.
* "Here's 2 shapes. Press the triangle."
* "Here's 2 numbers. Press the bigger one."
It would have to be something a trucker can easily solve at a glance, barely taking their eyes off the road. And they get a couple tries, a couple warnings, and then a loud siren and the event gets logged with their employer. 3 strikes system or something.
There's a dozen ways this could fail, but it's a fun thought experiment: "how do you determine a trucker is awake and functioning, without distracting them too much, annoying them too much, getting too many false positives, or putting electrodes on their brain?"
I remember, many years ago, using an alarm clock on my phone that used questions like that.
It was a clever solution to the problem I was having at the time, which was that I kept oversleeping because I got really good at shutting off the alarm before waking up enough to remember what alarm clocks were for.
2. What you said above, already possible [1]
3. An electronic distance limiter on the truck itself
[1] https://www.cadillac.com/ownership/vehicle-technology/super-...