Thank you for reporting this issue to the City of Cambridge. Unfortunately, the City is not responsible for addressing issues on state property, but we've shared this report with the Massachusetts Department of Transportation (MassDOT) and asked them to address. Please contact MassDOT at 877-MA-DOT-GOV. for direct follow-up about this.

This problem has also occurred at the intersection of Land Boulevard and Binney Street. I believe that traffic light controllers have a safety feature that sets the lights to blinking if an unsafe condition is detected. Perhaps this safety feature was never activated or was disabled.