Knowledge Base

What do I do when I see a dark or flashing traffic signal?

To report a traffic signal intersection that is entirely DARK or FLASHING outside of business hours (Monday through Thursday, 8:00 a.m. to 5:00 p.m.), please call the Jefferson County Sheriff’s Office at 303-980-7300. During business hours, contact the Jefferson County Transportation and Engineering Division at 303-271-8495.

If a traffic signal is entirely dark or flashing, Colorado State Law dictates that motorists shall treat the intersection as all-way stop control, unless an officer is directing traffic.
Updated 3/1/2022 10:04 AM
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