S.D. Codified Laws § 32-25-6.1 (2026)
No person may drive a vehicle which is towing a manufactured home or mobile home of a width in excess of one hundred two inches at a speed greater than fifty-five miles per hour upon the interstate highway system or greater than forty-five miles per hour upon any other highway. A violation of this section is a Class 2 misdemeanor.
Source: SL 1970, ch 175 , § 14, § 3; SL 1989, ch 255 , § 129; SL 1993, ch 238 .