South Dakota Motorcycle Practice Test 2026

SDCL § 32-20-4 requires helmets for motorcycle operators and passengers who are under 18 years old. Adult operators and passengers (18 and older) are not legally required to wear a helmet — South Dakota has a partial, age-based helmet law. Despite the legal exemption for adults, the Motorcycle Safety Foundation and trauma surgeons strongly recommend helmets for all riders on every ride. Head injuries are the leading cause of motorcycle fatality, and a DOT-approved helmet dramatically reduces this risk.

Yes — SDCL § 32-20-4.1 requires ALL motorcycle operators, regardless of age, to wear an eye protective device when riding, UNLESS the motorcycle is equipped with a windscreen of sufficient height and design to provide adequate eye protection in the normal riding position. Unlike the helmet law (under-18 only), the eye protection requirement applies to adult riders too. Additionally, tinted eye protection that reduces light transmittance below 35% is prohibited during nighttime hours.

No. SDCL § 32-20 prohibits motorcycle operators from overtaking and passing in the same lane occupied by the vehicle being overtaken. Lane splitting and lane filtering are not authorized in South Dakota. The statute does provide one exception: two motorcycles (or a motorcycle and a bicycle) may ride side by side (two abreast) in the same lane — this is explicitly permitted. But passing between lanes of traffic is illegal.

Yes — completing an approved MSF Basic RiderCourse in South Dakota waives BOTH the motorcycle knowledge test AND the motorcycle skills test at the DPS. This is a more comprehensive waiver than in many states (which only waive the skills test). Applicants who complete the MSF course can obtain their motorcycle endorsement without taking either DPS test.

SDCL § 32-23-1 applies fully to motorcycle operators. Adult riders (21 and older): 0.08% BAC. Under-21 riders: 0.02% BAC (§ 32-23-21). Commercial vehicle operators: 0.04% (§ 32-12A-44). South Dakota's distinctive enhancement threshold is 0.17% BAC: at or above this level, § 32-23-2.1 mandates a chemical dependency evaluation and increases the administrative license revocation to 120 days. A work permit at this BAC level requires participation in the 24/7 Sobriety Program.

Yes. South Dakota requires motorcycle headlights to be on at all times — day and night — whenever operated on public roads. Daytime headlight use is mandatory and is one of the most effective motorcycle safety measures. Other drivers are significantly more likely to notice a motorcycle with its headlight on in daylight conditions.

Yes. SDCL § 32-20 explicitly states that the prohibition against overtaking in the same lane does not apply to motorcycles being operated two abreast in a single lane, or a motorcycle and a bicycle being operated two abreast in the same lane. Two motorcycles may legally ride side by side in one lane. Three or more motorcycles abreast is not permitted. For group riding, a staggered formation (alternating left and right thirds of the lane) is recommended.

Beyond the legally required helmet (for under-18) and eye protection (for all riders without windscreen), motorcycle safety experts recommend: a jacket with abrasion-resistant material and impact armor, gloves, over-the-ankle boots, and long pants. In a crash, an unprotected rider's skin contacts road surfaces traveling at highway speeds — road rash can be severe and permanently scarring. South Dakota's 80 mph interstate speed limit and long rural highway stretches make proper gear especially important.