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Hoover, AL Sign Regulations: Digital Billboards (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Allowed only in
C-2 and C-3 business districts
Per-premises limit
one EMS per facing street
Minimum static display
one hour
Transition time cap
one second
Night luminance cap
750 candelas per square meter
Off-premise billboards
banned citywide

Summary

Hoover allows one electronic message sign per freestanding sign per facing street, only in the C-2 and C-3 business districts, capped at a slice of the sign's face area, hour-long static displays, automatic night dimming to 750 candelas per square meter, and a mandatory black-screen failsafe if the display glitches.

§12.08.02 Electronic message signs. Each on-premise, freestanding sign in the C-2 community business district and in the C-3 General Business District that conforms to the requirements of this Article, may include one electronic message sign ("EMS"), except that each premises shall be limited to a maximum of one EMS per facing street, subject to each of the following restrictions and conditions. ... C. The EMS shall only display a static message and/or graphic. The minimum display time for the static message and/or graphic shall be one hour. The transition time between messages and graphics shall not exceed one second and shall not include visually distracting techniques such as flashing, racing, strobing, twinkling, or animation. ... F. EMS signs shall not exceed a maximum luminance level at night of seven hundred and fifty candelas per square meter (750 cd/m2)... G. All EMS signs shall contain a default mechanism that will cause the EMS sign to immediately turn off or immediately revert to a black screen if the EMS malfunctions.

Full Breakdown

02 allows an electronic message sign (EMS) only as part of an on-premise freestanding sign that already conforms to Article 12, and only "in the C-2 community business district and in the C-3 General Business District," capped at "a maximum of one EMS per facing street" per premises. The EMS face isn't extra signage: its area "shall be included as part of the permitted sign face area of the freestanding sign," and Table 12-4 caps how much of that area the EMS may use, from 16 square feet on a sign under 100 square feet up to 32 square feet on a sign 120 square feet or larger.

C, held for at least one hour, with transitions capped at one second and no flashing, racing, strobing, twinkling or animation allowed. Every EMS needs automatic dimming, by photocell or software, so nighttime luminance never exceeds 750 candelas per square meter measured 25 feet from the sign's base, starting a half hour before NOAA's apparent sunset and lasting until apparent sunrise. G, and converting an existing sign to an EMS requires a new sign permit. Exposed neon or fiber-optic tubing on an EMS is prohibited.

04 prohibits "off-premise billboards and signs which direct attention to a business commodity, service, entertainment or attraction sold, offered, or existing elsewhere than upon the same property upon which such sign is displayed," so a true digital billboard advertising another business has no path to approval anywhere in Hoover.

Violations & Fines

Operating an EMS that flashes, animates, exceeds the 750 candela nighttime cap, or lacks the required black-screen failsafe is a sign-article violation: §12.14 makes the sign owner and the property owner jointly and severally liable, punished as provided in §2.01.06, a $1 to $500 fine or up to six months' imprisonment, with each day of noncompliance a separate offense. §12.09.01 separately bans any sign exceeding that luminance cap or displaying moving, scrolling or flashing content.

Frequently Asked Questions

Can I put a digital billboard on my C-2 property?
Only as an electronic message sign attached to an existing conforming freestanding sign, per §12.08.02, limited to one EMS per facing street and capped at 16 to 32 square feet depending on the freestanding sign's total face area. A standalone off-premise digital billboard is banned citywide under §12.09.04.
Can the message change every few seconds?
No. §12.08.02.C requires each static message or graphic to display for at least one hour, with the transition between messages capped at one second and no flashing, racing, strobing, twinkling or animation permitted on the display.
How bright can an EMS be at night?
No more than 750 candelas per square meter measured 25 feet from the sign's base, under §12.08.02.F, with automatic dimming required starting a half hour before NOAA's apparent sunset and continuing until apparent sunrise the next morning.
What happens if the sign malfunctions?
§12.08.02.G requires every EMS to have a default mechanism that immediately turns the sign off or reverts it to a black screen the moment it malfunctions, so a glitching or stuck display can't keep operating.

Sources & Official References

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