[justinlloyd]

Because on Van Nuys Blvd the sensors are vandalized regularly, especially around the court house at Erwin, and further North near Panorama City, and you will sit at those left turn lights late in the evening for a very long time, yet no cars pass by. And there are other places like that too. Venice Blvd just west of Lincoln, in the two decades I've lived in L.A., the left turn lights in that area are so badly programmed they might as well not exist. There will be eight or nine cars backed up at Venice & Overland, and they will briefly blip green enough for a car or two to get through, yet the left turn light at Glendon will sit on green long after the last car has passed through. There's a reason people shortcut down Glendon, then jink on to Overland further down at a T-junction with a functioning set of lights. Same problem exists on Fairfax around the school and theatre. You get to know precisely which lane you should sit in for which section of the road, that literally varies block to block, because the left turn lights will block up traffic all the way back to Canter's deli all the way from Santa Monica if it is the wrong time of day.

[neuralRiot]

Induction sensors are being phased out for cameras which I have observed do a much better job. For example magnetic sensors will “shut off” the lane if there’s too much space between turning cars, camera systems on the other hand allows for all the waiting vehicles to turn before shutting off.