No structure, fixture, movable personal property, or activity located in the area of the self-help business improvement district and authorized by the district management corporation, by reason of its location or use, shall be deemed a nuisance or an unlawful obstruction or condition, notwithstanding any law regulating the use of public streets and highways, and neither the municipality, the corporation, nor any user acting under the corporation's authority shall be liable for any injury to person or property, unless the structure, fixture, moveable personal property, or activity is negligently constructed, maintained, or operated.
Ala. Code § 11-54B-93 (1975)