Arizona Revised Statutes Section 28-7732 and ADOT outdoor-advertising rules govern digital billboards along controlled-access highways. Maricopa County Zoning Ordinance Chapter 13 regulates off-premise signs in unincorporated areas with size, brightness, and spacing limits.
Digital billboards along Arizona interstates and state routes need an ADOT outdoor-advertising permit under ARS 28-7732 and 28-7902, complying with the federal Highway Beautification Act. Brightness must not exceed 0.3 foot-candles above ambient at 350 feet, and message changes must hold static at least 8 seconds with under 1-second transitions. Maricopa County Zoning Ordinance Chapter 13 limits off-premise signs in unincorporated areas to commercial or industrial zones with 1,000 to 1,500 foot spacing and 672 sq ft maximum face area. Cities like Phoenix, Mesa, and Tempe have their own digital-conversion caps and may even ban new off-premise digital faces.
Operating a digital billboard without ADOT permit is a Class 2 misdemeanor under ARS 28-7733, with up to four months jail and $750 fine. Civil penalties include $1,000 per day. County zoning violations trigger abatement orders and daily fines.
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Side-by-side rule comparisons with other cities in Maricopa County.
See how Glendale's digital billboards rules stack up against other locations.
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