Reality:
Measure 91 does not change current DUI laws. In fact, since legalizing adult recreational use of marijuana, Colorado’s highways are getting safer. Fatalities are down in 2014 from the same point in 2013. Highway fatalities are occurring at a 48% less rate than they were in 2002.
(Source: Colorado Department of Transportation, 2014 statistics so far, 2013 statistics and historical trends.)