61:31:01:12Mirrors.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
All buses shall be equipped with one interior and two exterior rearview mirrors that provide a clear view to the driver to the rear and past the left and right rear of the bus.
Source: 5 SDR 19, effective September 14, 1978; 8 SDR 87, 8 SDR 134, effective July 1, 1982; 12 SDR 151, 12 SDR 155, effective July 1, 1986.