Rock Island County, IL Outdoor Lighting: Light Trespass & Shielding (2026)

572(B)(1) applies in every zoning district except those containing single-family and two-family dwellings, covering business, commercial, and industrial parcels where parking lot and security lighting are common. 572(C) reaches all zoning districts including residential: fixtures must be arranged to reflect light away from adjoining property, and no use may produce glare clearly visible beyond a property line or a brightness sensation that causes annoyance, discomfort, or impaired vision to a neighbor. 571 backs this up on the front end: except for single-family and two-family dwellings, lighting plans for parking lots and security lighting must be reviewed and approved by the Police Department and other appropriate county officials before a permit is issued, and the plan must show luminaire height, intensity at the least and greatest points of illumination, hours of illumination, and a photometric layout with points no more than 30 feet apart.

573 phases enforcement in for existing nonconforming lighting: legally non-complying fixtures may stay until luminaires, poles, or more than half a parking lot's surface are replaced, or a new structure or change of occupancy triggers an upgrade requirement. 574.