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Page 1 of 3 AARP Driver Safety Smart Driver™ Course State-Specific Information D20718 – March 2026REV SOUTH DAKOTA SMART DRIVER™ COURSE STATE-SPECIFIC INFORMATION: SOUTH DAKOTA UNIT 2 – How Do We Navigate Changes? Driving While Impaired - Participant Guidebook Page 14 • Drivers will be automatically considered under the influence if they have a BAC of .08 or more. However, you can still be convicted of a DUI if your BAC is below this level, if there is sufficient evidence that your driving was impaired. • Drivers may not operate a motor vehicle while under the influence of marijuana or any other controlled substance. • Officers will conduct a preliminary roadside analysis of a driver's breath prior to arrest if they have reason to believe that the driver is intoxicated. • Drivers consent to chemical tests of their blood, breath, or urine if arrested for driving under the influence when they operate a motor vehicle. • Courts may require drivers to install an ignition interlock device if convicted of a DUI. UNIT 3 – Are We Ready to Drive? Child Safety Seats - Participant Guidebook Page 37 • Children under the age of 5 and under 40 pounds must be restrained in the appropriate child safety seat. Construction Signs and Construction Zones - Participant Guidebook Page 49 • Drivers must follow a flagger's directions. • Fines for speeding are doubled in a construction zone when workers are present. Railroad Grade Crossings - Participant Guidebook Page 56 • It is illegal to drive around a railroad crossing gate, even if there is no train. • Drivers must stop at least 15 feet from the tracks, but no more than 50 feet away. • It is illegal to park within 50 feet of a railroad crossing. • It is illegal to pass another vehicle while approaching a railroad crossing. UNIT 4 – Are We Smart on the Road? How to Avoid Distractions - Participant Guidebook Page 61 • Drivers are prohibited from texting while driving, unless using a hands-free device. This law does not apply to individuals reporting an emergency. • Drivers with an instruction permit or intermediate license are prohibited from using cell phones (handheld and hands-free).