In the state of Missouri, what happens when a driver is convicted of driving under the influence of drugs or alcohol depends on the circumstances surrounding the arrest. Whether it is the driver's first offense and the blood-alcohol level can make a difference in what penalties are applied.
If it is your first DUI conviction, your license will be suspended for 90 days. If the DUI was while driving a commercial vehicle, the penalties are increased. In this case, a blood-alcohol level of higher than .039 percent means the driver will have two points on his driver's license and be disqualified from driving a commercial vehicle for a year. It may be possible for some first-time, noncommercial offenders to be awarded some driving ability under the Restricted Driving Privilege program, but this is not a guarantee.