> You put up separate lights, where there is a red turn arrow for the cars and a light for the bicycles The problem is that the time to wait for the signal to

> You put up separate lights, where there is a red turn arrow for the cars and a light for the bicycles The problem is that the time to wait for the signal to turn green starts taking longer and longer and people will start to ignore the signals. I see it all the time with pedestrian signals. That is, pedestrians will just start crossing on the don't walk sign rather than waiting for the next 2 minutes before it changes. The same thing will happen when the red phase starts taking more than a minute to change to green or people (whether when in a car or on a bike) will start running the red lights more if they know they're going to get stuck for multiple minutes at the signal otherwise.