The Federal Motor Safety Carrier Administration (https://www.fmcsa.dot.gov/) is responsible for adopting rules and regulations that govern interstate trucking. These rules and regulations apply to both truck drivers and trucking companies. The FMSCA regulations in large part are intended to promote safety, such as the following regulations:

• Hours of Service Regulations. The hours of service regulations are comprehensive regulations governing the amount of sleep and rest that truck drivers must have. In order to ensure compliance with these regulations, drivers must maintain logbooks, or electronic records, to document the dates, times driven, and other information.
• Prohibition on the Use of Alcohol or “Pep Pills”. Truck drivers may not drink alcoholic beverages within four hours prior to driving, and they may also not use “pep pills” or similar stimulants/drugs (even though such drugs otherwise may be legal).
• Vehicle Inspections. Truck drivers must inspect their vehicles carefully prior to driving, and at certain other prescribed points, and must document such inspections.
• Training and Safety. Truck companies must train and ensure their drivers are familiar with the rules of the road, including federal trucking regulations, and must not promote or ignore safety violations.

The foregoing are only a sample of key FMSCA regulations, all of which do not apply to non-interstate commercial driving.