Speed Limits
SDCL § 32-25-1.1 — 65 on streets and highways, 80 on the interstate, 25 in unposted towns and 15 past a school
| Where | Limit |
|---|---|
| WhereA street or highway, unless posted otherwise | Limit65 miles per hour |
| WhereThe interstate highways | Limit80 miles per hour |
| WhereAn urban area not zoned or posted | Limit25 miles per hour |
| WherePassing a school at recess or opening and closing hours | Limit15 miles per hour |
Reasonable first. Driving faster than is reasonable and prudent under the conditions is a Class 2 misdemeanor, whatever the posted figure.
Each limit in the table is a Class 2 misdemeanor to exceed.
Posted zones set their own limits. A particular ticket is a question for a licensed South Dakota attorney.
Sources for this section (5)
- SDCL § 32-25-1.1 — Maximum daytime speed; Violation as misdemeanor
- SDCL § 32-25-3 — Requirement that speed be reasonable and lawful under statutes; Violation as misdemeanor
- SDCL § 32-25-4 — Maximum speed on interstate highways; Violation as misdemeanor
- SDCL § 32-25-12 — Speed limit in unposted urban areas; Violation as misdemeanor
- SDCL § 32-25-14 — Speed limit in school zones; Violation as misdemeanor
Legal information, not legal advice. Verified as of October 2026. Applying it to a particular situation is the work of a licensed South Dakota attorney.