Regulations that apply under 49 CFR

Motor carriers operating commercial motor vehicles designed or used to transport between nine and 15 passengers (including the driver) in interstate commerce for direct compensation must comply with the following regulations:

49 CFR Part 390.21
Motor carriers must ensure every self-propelled CMV they operate is marked as specified in paragraphs (b), (c) and (d) under 49 CFR 390.21, including the requirement to mark the vehicle with the U.S. Department of Transportation Number and the legal name or a single trade name of the motor carrier operating the vehicle.

49 CFR Part 392
Requirements include general prohibitions against the use of alcohol, drugs and other substances while operating a CMV, and operating a CMV while ill or fatigued. The motor carrier must ensure its drivers comply with rules governing CMV operation at railroad grade crossings, practices to ensure a CMV is safely stopped, fueling precautions and other general prohibited practices.

49 CFR Part 393
Requirements concern parts and accessories necessary for safe operation of a CMV. Applicable requirements include, among other things, lamps, reflective devices and electrical wiring, brakes, glazing and window construction, fuel systems, and emergency equipment.
 
49 CFR Part 395
Motor carriers must ensure their drivers comply with the applicable hours-of-service requirements for motor carriers of passengers. Most, if not all, operators of small passenger-carrying vehicles within the 75 air-mile limit and their driver will be covered by the short-haul operations provision of 49 CFR 395.1(e)(1).
 
49 CFR Part 395.5
Any driver who operates beyond a 100 air-mile radius from the normal work-reporting location must not drive more than 10 hours after eight consecutive hours off duty or operate a CMV after being on duty for more than 15 hours following eight consecutive hours off duty. Drivers must not drive after being on duty for 60 hours in any seven consecutive days if the motor carrier does not operate a CMV every day of the week, or after being on duty for 70 hours in any eight consecutive days if the motor carrier operates every day.