What Regulations Govern Commercial Truck Drivers?

Commercial truck drivers operate under strict federal and state regulations designed to keep everyone on the road safe. When those rules are violated, and a crash occurs, the consequences can be devastating. Our truck accident lawyers at Parker & Bain are ready to discuss your case.

Commercial Driver’s License (CDL) Requirement

Every commercial truck driver in South Carolina must hold a valid CDL before operating a large commercial vehicle. The licensing process includes written knowledge tests, a skills examination, and specific endorsements depending on the type of cargo or vehicle being operated.

Medical Qualifications

Federal law requires commercial drivers to meet physical and mental health standards before they are cleared to drive. The Federal Motor Carrier Safety Administration (FMCSA) sets baseline requirements that every driver must satisfy:

• Vision and hearing standards
• Blood pressure and cardiovascular health
• Absence of conditions that could cause sudden loss of consciousness
• No use of disqualifying medications
• A valid medical examiner’s certificate is renewed every two years

Hours of Service (HOS)

FMCSA enforces hours-of-service rules limiting how long commercial drivers can operate without rest. Property-carrying drivers may drive up to 11 hours after 10 consecutive hours off duty, cannot drive past the 14th hour on duty, and must take a 30-minute break after 8 hours of driving.

Electronic Logging Devices (ELDs)

Most commercial motor vehicles must be equipped with an electronic logging device that automatically records driving time and hours-of-service data. These devices replaced paper logbooks to reduce falsification and make it easier for inspectors to verify that drivers are complying with rest requirements.

Weight and Size Limits

Federal regulations cap commercial trucks at 80,000 pounds gross weight on interstate highways, with limits of 20,000 pounds per single axle and 34,000 pounds per tandem axle. Trucks that exceed these limits may face fines or be taken out of service at inspection stations.

Drug and Alcohol Regulations

Mandatory drug and alcohol testing is required before hiring, after any reportable accident, on a random basis throughout the year, and whenever a supervisor has reasonable suspicion of impairment. The legal blood alcohol limit for CDL holders is .04 percent, which is half the standard limit for passenger vehicle drivers.

Vehicle Safety and Maintenance

Trucking companies and drivers share responsibility for keeping commercial vehicles in safe operating condition. Federal regulations require routine inspections and immediate reporting of any mechanical defects:

• Pre-trip and post-trip driver inspections
• Annual comprehensive vehicle inspections
• Brake system checks and adjustments
• Tire condition and inflation monitoring
• Lighting and reflector functionality
• Secure cargo loading and tie-down verification

How Trucking Regulation Violations Affect Your Claim

When a truck driver or carrier violates federal safety regulations, that violation can serve as powerful evidence in an injury claim. Proving a regulatory breach strengthens your position in several ways:

• Establishes negligence without needing to prove a subjective standard of care
• Creates a basis for holding the trucking company directly liable
• Supports claims for higher compensation based on willful disregard for safety
• Provides documented evidence through ELD data, inspection records, and testing results

Contact a Gaffney Commercial Truck Accident Attorney

Were you or someone you love hurt in a collision involving a commercial truck? Evidence from these crashes can disappear quickly as trucking companies move fast to protect their own interests. Call Parker & Bain at 864-252-2650 or contact us online to schedule a free consultation before valuable records are lost.