HB 1591 -- Driving Under the Influence of a Controlled Substance Sponsor: Lipke This bill creates the crime of driving with a controlled substance in a person's body if the person operates a motor vehicle with any detectable quantity of a controlled substance or its metabite without a valid prescription. The crime will be a class B misdemeanor. Any second or subsequent offense will subject the person to the aggravated offender provisions of Section 577.023, RSMo.Copyright (c) Missouri House of Representatives