Blinking red means that you treat it as a stop sign. This is something you must know when you pass the DMV test in order to get your license. I came up to Vineyard driving on Montevino and stopped. Traffic on my left was obeying the rule, stopping and yielding right of way. As I normally do, I looked a second time to my right just as I was to begin driving into the intersection when there suddenly appeared a woman driving her SUV somewhere north of the 35 mph limit, talking on her cell phone, who blew through the intersection and appeared oblivious to the great danger she created. I braked and immediately went on the horn, which seemed to wake her up a bit as indicated by a brief flash of her brake lights.
Folks, red light running, which is epidemic in Pleasanton, is dangerous, but obliviousness to blinking red lights is even more so.