SOUTH DAKOTA LAWS CONCERNING AUTOMOBILES
Residents of other states using their cars in South Dakota will not be required to re-register their cars in South Dakota providing they have complied with all laws regarding registration of automobiles in the state from which they came, and providing such state extends a similar privilege to South Dakotans.
Automobiles must be driven in a careful and prudent manner, at a rate of speed such as not to endanger the property, life or limb of any person, provided that a rate of speed in excess of 25 miles per hour is presumptive evidence of driving at a rate of speed which is not careful and prudent, in case of injury to the person or property of another. Local authorities may limit speed to a rate of 10 miles per hour provided proper notices or warnings are placed in the public highway indicating such limitation of speed.
The raising of the hand, by anyone who is leading, driving or riding a horse or other draft animal, as a signal to stop shall cause the driver of any automobile thus signalled to, to stop his car until the danger of frightening such animal is past.