DWI law sets a lower per se alcohol concentration limit for driving commercial motor vehicles, .04 instead of .08, and the implied consent law allows for a chemical test upon probable cause that the commercial vehicle driver has consumed any amount of alcohol.

A person who violates the .04 standard while driving a commercial motor vehicle is subject to a period of disqualification (one year for the first violation and ten years for any subsequent violation) from commercial motor vehicle driving. The person would remain validly licensed to drive regular motor vehicles unless he or she also has violated regular DWI law by exceeding the .08 per se standard or by driving while impaired or with any amount of certain controlled substances in the body, in which case the person would be subject to the full range of applicable penalties and sanctions of regular DWI law.

In addition, a commercial motor vehicle driver who incurs license revocation or cancellation for an impaired driving violation in a personal passenger vehicle receives no special dispensations from the sanctions and penalties that apply to other drivers—the person is prohibited from driving any type of vehicle until becoming validly relicensed to drive.

CREDIT: The content of this post has been copied or adopted from An Overview of Minnesota’s DWI Laws, originally published by the Minnesota House of Representatives Research Department and written by legislative analysts Jim Cleary and Rebecca Pirius.

This is also part of a series of posts on Minnesota’s DWI Laws.