Truck drivers have to take breaks every 4.5 hours for 45 minutes.
Is this a specific state requirement? I ask because that's not what the FMCSA says. It's 30 minute break every 8 hours (USA) and it can be any activity including including work (except driving) that would satisfy the requirement. Source, am a truck driver and https://www.fmcsa.dot.gov/regulations/hours-service/summary-hours-service-regulations see 30-minute driving break section.