70:03:01:61.04Longer combination vehicle -- Signing requirements.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
Rulemaking activity
The rear trailer of the LCV must have affixed to it a sign that states, "LONG LOAD." The sign must be at least 7 feet long and 18 inches high. The color of the sign must be black letters on yellow background. At minimum, the sign's lettering must be 10 inches high with a 1.41-inch brush stroke. (See note at the end of this section.)
Source: 16 SDR 49, effective September 19, 1989.