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Resident reports dangerous flashing streetlights at Diamond Bar Boulevard intersection

Diamond Bar City Council · February 3, 2026

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Summary

A resident told the council that overhead streetlights and illuminated street-name signs at the Diamond Bar Boulevard and Palomino/Golden Springs intersection are flashing and going dark intermittently, posing a hazard for drivers; previous reports to public works and Southern California Edison were said to have gone unresolved.

During public comment at the Feb. 3 meeting, Douglas Barcon described a recurring electrical problem at the Diamond Bar Boulevard and Palomino/Golden Springs intersection where overhead streetlights and illuminated street-name signs flash on and off in cycles. "They start out fine. Then they start to flash about once every, oh, I don't know, 5 or 10 seconds ... then it stops after a few cycles ... and it gets darker and darker," Barcon said, describing what he characterized as a hazard for drivers.

Barcon said he previously reported the issue to the city and to Southern California Edison but that the problem has persisted. He urged the council to address the recurring outage pattern to reduce the risk to motorists.

The transcript records the complaint and the speaker's request for action; the meeting record does not include a recorded response from council or staff during that segment nor a formal directive to public works in the same hearing. The issue was raised as a public comment, not an agenda item, and the council did not take immediate formal action on the record during the meeting.