Drunk Driving Laws
City of Chesterfield drunk driving laws are published in the City Code under Chapter 18, sections 27 and 28. It is unlawful to operate a motor vehicle in an intoxicated or drugged condition. Intoxication is measured by the amount of alcohol in a person's blood. Legal intoxication is eight-hundredths of one percent (or more) by weight of alcohol in blood, expressed as 0.08%.
Missouri law has more Driving While Intoxicated provisions and increased penalties for repeat offenses. Those additional regulations may be found in theRevised Statutes of Missouri (RSMo.) 577.010 and 012. Missouri statutes are available on the Missouri General Assembly website.