Waterloo, IA Sign Regulations: Digital Billboards (2026)

Section 9-6B-11, Electric Signs, in Waterloo's sign chapter, title 9, chapter 6, article B, is the closest the city's code comes to regulating an electronic or digital display, since the ordinance predates LED billboard technology but still reaches any sign that lights up or animates. Subsection A caps flashing incandescent lamps at 60 watts unless a sun screen protects them, and requires reflector lamps to carry sun screens except for indirect floodlighting. Subsection B bars flashing every element of a sign at once and prohibits any flashing effect that could be mistaken for a traffic-control device, and it bans revolving beacons outright, a rule that would stop a digital billboard from running an all-elements strobe pattern.

Subsection C requires the sign to display a statement of its own power consumption. Subsections D and F cover installation: wiring to a permanent sign must run underground or be enclosed in the structure or a raceway unless the utility company requires overhead service, and every electrical connection, whether the sign is permanent, portable or temporary, must be made by a licensed electrician following the National Electrical Code. None of this replaces the permit and bonding requirements of article A; an operator installing an LED or electronic message board in Waterloo still applies for a sign permit under § 9-6A-1 and pays the valuation-based fee schedule in § 9-6A-3 before the electric-sign standards of § 9-6B-11 even come into play.