Earlier this month the National Transportation Safety Board made a recommendation that states should lower the legal limit to drive to 0.05 percent blood alcohol concentration. Readers of this blog may understand that Minnesota law currently sets the legal limit at 0.08 percent–that is the point at which the law presumes impairment of any driver, regardless of other factors. Generally, Minnesota’s DWI laws allow authorities to seek DWI charges based upon alleged evidence of impairment without the alcohol test, but many cases involve multiple charges as prosecutors hope to cover their bases.