In addition to other penalties that may be imposed under California’s DUI laws, a commercial driver who commits a first DUI while driving any vehicle will be disqualified from driving a commercial vehicle for one year.

If the offense was committed while the driver was operating a commercial vehicle and transporting hazardous materials, the disqualification period is three years. If a commercial driver is convicted of a second DUI while driving any vehicle, the offender will be disqualified from driving a commercial vehicle for life, which may or may not be reduced to a period of 10 years.