I have little patience for a cyclist who does not obey all traffic signals at all times -- same as a car. You're under the same rules as a car. Cars running red lights get busted. Bikes should too. However, I see a lot more bikes running reds than I do cars. Something's not right here.

The only excusable time to run a red is when the stoplight is clearly broken. For a cyclist, that includes lights that change only when the pressure sensor triggers -- I know a solo biker isn't heavy enough to trip an in-road pressure sensor. However, if there's a car there, or reasonably close by, wait.