Versions of South Dakota Codified Laws 32-22-12.4. Combination of towing vehicle and trailers or semitrailers transporting light or medium duty trailers for commercial delivery on LawServer 2023 South Dakota Codified Laws 32-22-12.4. Combination of towing vehicle and trailers or semitrailers transporting light or medium duty trailers for commercial delivery 2022 South Dakota Codified Laws 32-22-12.4. Combination of towing vehicle and trailers or semitrailers transporting light or medium duty trailers for commercial delivery 2021 South Dakota Codified Laws 32-22-12.4. Combination of towing vehicle and trailers or semitrailers transporting light or medium duty trailers for commercial delivery 2019 South Dakota Codified Laws 32-22-12.4. Combination of towing vehicle and trailers or semitrailers transporting light or medium duty trailers for commercial delivery