Hours of Service Regulations PART 395 - HOURS OF SERVICE OF DRIVERS

The rules in this part apply to all motor carriers and drivers.

This link will direct you to the eCFR for the Hours of Service and Electronic Logging Device requirements (HOS &ELD) as well as the Carrier's and Driver's Responsibilities

https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-395#_top