You sure its not the sheer volume of cars with single occupants? That's what slows me down to a crawl on the M60 when i travel in my car. (On my own granted). It takes me twice as long to get to work in the car as it does by bike. Go figure!
I think you have though. More motorists jump lights, speed, drive whilst holding their phones than cyclists who jump red lights. Do you know that if you don't stop at the first stop line at lights (ASL) you have technically jumped a red light. I'd say 75% of drivers don't know this law based on the volume who drive into it, roughly around the same who don't drive in a bus lane outside its operating hours through complete ignorance of the law. You can have as many tests as you like, from what i see every day it doesn't make many people better drivers.
I pay for the roads as i pay council tax. So long as its legal i'll cycle where it's safe. I'll keep left when it's safe and if the road is full of pot holes or there is insufficient room to pass me safely i'll go primary (central to the road).