Audible signal devices and signal lamps for authorized emergency vehicles, school buses and police vehicles; restrictions on use; effect of use.
S.C. Code Ann. § 56-5-4700
in effect(A) Every authorized emergency vehicle shall, in addition to any other equipment and distinctive markings required by this chapter, be equipped with a siren, exhaust whistle, or bell capable of giving an audible signal. (B) Every school bus and every authorized emergency vehicle, in addition to any other equipment and distinctive markings required by this chapter, must be equipped with signal lamps mounted as high and as widely spaced laterally as practicable, which must be capable of displaying to the front two alternately flashing red lights located at the same level and to the rear two alternately flashing red lights located at the same level, and these lights must have sufficient intensity to be visible at five hundred feet in normal sunlight. However, vehicles of a fire department or funeral home when equipped with a mounted, oscillating, rotating, or flashing red light, visible in all directions for a distance of five hundred feet in normal sunlight, are not required to have additional signal lamps. (C) All police vehicles when used as authorized emergency vehicles must be equipped with oscillating, rotating, or flashing blue lights. In addition to the blue lights, the police vehicle may, but need not be equipped with alternately flashing red lights as herein specified, and may, but need not be equipped with oscillating, rotating, or flashing red lights, white lights, or both, in combination with the required blue lights. The authorized emergency police vehicle lights described herein must be visible for a distance of five hundred feet in all directions in normal sunlight. It shall be unlawful for any person to possess or display on any vehicle any blue light that is visible from outside the vehicle except one used primarily for law enforcement purposes. (D) The alternately flashing lighting described in subsection (B) of this section shall not be used on any vehicle other than an authorized emergency vehicle. Provided, that a school bus may use the alternately flashing red lighting described in subsection (B), or red flashing lights in the rear and amber flashing lights in the front. (E) The use of the signal equipment described herein shall impose upon drivers of other vehicles the obligation to yield right-of-way and stop as prescribed in Sections 56-5-2360 and 56-5-2770.
Source: Open US Law by Vaquill AI (CC BY 4.0)URL: https://www.scstatehouse.gov/code/t56c005.phpFetched: 10/17/2026