Billboard Lighting: Des Plaines vs Oak Lawn
How do billboard lighting rules compare between Des Plaines, IL and Oak Lawn, IL?
Des Plaines and Oak Lawn have similar restriction levels.
Des Plaines, IL
Cook County
Illuminated billboards in Cook County must comply with the Illinois Highway Advertising Control Act brightness rule of 0.3 foot-candles above ambient measured at 250 feet, plus Cook County Code Ch. 38 environmental standards and Ch. 102 zoning lighting controls limiting glare and trespass onto adjacent properties.
View full Des Plaines rules →Oak Lawn, IL
Cook County
Illuminated billboards in Cook County must comply with the Illinois Highway Advertising Control Act brightness rule of 0.3 foot-candles above ambient measured at 250 feet, plus Cook County Code Ch. 38 environmental standards and Ch. 102 zoning lighting controls limiting glare and trespass onto adjacent properties.
View full Oak Lawn rules →Key Facts Comparison
| Fact | Des Plaines | Oak Lawn |
|---|---|---|
| Brightness cap | 0.3 foot-candles over ambient | 0.3 foot-candles over ambient |
| Measurement point | 250 feet from face | 250 feet from face |
| Dimming required | Automatic photocell controls | Automatic photocell controls |
| County source | Code Ch. 38 and Ch. 102 | Code Ch. 38 and Ch. 102 |
| Suburban curfews | Often 11 p.m. shutoff | Often 11 p.m. shutoff |
Highlighted rows indicate differences between cities.
Des Plaines FAQ
Who measures billboard brightness in Cook County?
IDOT outdoor advertising inspectors and county code enforcement use calibrated illuminance meters at 250 feet from the sign face. Citizens reporting glare can request a measurement; persistent overbright signs face IDOT permit suspension and county nuisance citations.
Must digital billboards dim at night?
Yes. Photocell-driven automatic dimming is required so the sign maintains the 0.3 foot-candles above ambient cap as surrounding light drops. Many suburban municipalities go further with explicit nighttime curfews or full shutoff hours.
Can residents report a glaring billboard?
Yes. Report the sign location and IDOT permit number to IDOT Outdoor Advertising in Springfield and to the township or municipal building department. Cook County code enforcement can investigate light trespass affecting residential properties under Ch. 38.
Oak Lawn FAQ
Who measures billboard brightness in Cook County?
IDOT outdoor advertising inspectors and county code enforcement use calibrated illuminance meters at 250 feet from the sign face. Citizens reporting glare can request a measurement; persistent overbright signs face IDOT permit suspension and county nuisance citations.
Must digital billboards dim at night?
Yes. Photocell-driven automatic dimming is required so the sign maintains the 0.3 foot-candles above ambient cap as surrounding light drops. Many suburban municipalities go further with explicit nighttime curfews or full shutoff hours.
Can residents report a glaring billboard?
Yes. Report the sign location and IDOT permit number to IDOT Outdoor Advertising in Springfield and to the township or municipal building department. Cook County code enforcement can investigate light trespass affecting residential properties under Ch. 38.
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