I can only answer from my own experience. I ride very defensively (since an idiot t-boned me coming out of a stop sign in 1976.)
I always assume that no one sees me. Even if I make eye contact with the driver at an intersection, I am not seen. Here is my formula: car in an area of danger = reduce speed + left hand on the clutch leve + right hand on the front brake lever + foot positioned over the rear brake lever. Please bear in mind that I live in and ride in an area where the average age of driver is about 85. -- 1977 240D 1983 VW Quantum turbo diesel 5-speed 1972 Honda CB-500K motorcycle http://www.airamericaradio.com/listen