For how long will you lose your CDL driving privileges if you are convicted of a second DUI offense in either a CMV or your private vehicle?

If you are convicted of DUI for a second time in either a CMV or your personal vehicle, you will lose your CDL privileges for life. While you are driving a CMV, a blood alcohol concentration (BAC) of 0.04% qualifies as DUI. (An average 180-pound man will reach a BAC of 0.04% from just two 12-ounce cans of beer before his liver starts to break down the alcohol.) Your first offense is a wake-up call and a chance to get help, but your second offense is going to mean unemployment. If you get a DUI, seek help before you lose your salary and your future.