>>1979964>>1979950it's called a tachograph; it's not that it's some sort of exotic device; as far as I know, US has a similar system to euro one, btw.
basic take: drive: max 9 (10h, twice/week)/day, max 56h/week, max 90h/biweekly; rest: 45h/week, 11h/day total, or 3+9h/day consecutive (split).
https://eur-lex.europa.eu/EN/legal-content/summary/driving-time-and-rest-periods-in-the-road-transport-sector.html