FLAGSTAFF, Ariz. -- The city of Flagstaff is enforcing its nighttime lighting rules.
The city conducted a partial audit of outdoor lighting last week and found 29 businesses in violation of the rules. Sixteen of the businesses were repeat violators.
City code requires businesses to turn off lighted signs at closing time, or at 11 p.m., whichever comes later.
The city's code compliance manager, Tom Boughner, tells the Arizona Daily Sun the primary cause for the violations was automatic timers being out of adjustment.
First-time offenders have 10 days to come into compliance. Repeat violators must comply immediately or face a day in civil court.
The lighting ordinance date back to 2001, when Flagstaff was designated the first International Dark Sky City. The ordinance was updated in 2011.