The loop detector in the left lane of Mill Rd, when trying to turn left onto Rt. 129, is not detecting cars. It needs to be fixed. This evening I sat through four light cycles with my young daughter in the car while impatient drivers honked at me to go through the red light. Very dangerous. I have reported this several times, as have others, over many months. I have reported it to MassDOT via phone calls and their website. This needs to be fixed.