- Caltrans Home
- Division of Traffic Operations
- Office of Traffic Engineering
- Legal Truck Access Branch
- 45' Buses & Motorhomes
- Oversize/Overweight Permits
- Contact Permits Staff
- Trip Permits (Vehicle Reg)
- Air Quality - Emissions Reg's
- Terminal Access Application Procedures
- Special Route Restrictions
- Getting to Eureka
- Load Overhang
Alcohol / Drugs
Drivers operating vehicles which require a commercial driver's license (class A, class B, or a class C with a hazardous materials endorsement) are required to be tested for alcohol and controlled substances according to the federal regulations. The employer of the driver is responsible for conducting a "controlled substances and alcohol testing" (CSAT) program that includes pre-employment testing, post-accident testing, random testing, and reasonable suspicion testing.
CALIFORNIA: California Vehicle Code, Section 34520 requires both intrastate and interstate motor carriers to comply with the federal regulations.
FEDERAL: The Code of Federal Regulations, Title 49:
- Part 40 - "Procedures for Transportation Workplace Drug & Alcohol Testing Programs"
- Part 382 - "Controlled Substances and Alcohol Use and Testing"
- Part 392.5 - "Driving of Commercial Motor Vehicles - Alcohol Prohibition"
For more information about alcohol and drug testing, you may contact the Commercial Vehicle Section of the California Highway Patrol (CHP) at (916) 843-3400.
Return to the Caltrans "Legal Truck Access Branch" page.