Well said that man!
I don't understand this problem folk have in driving within the posted limit. In the last 2 weeks I have been overtaken 3 times while travelling at 30 in a 30 usually they just drive 6 inches off the back bumper. If you don't know what speed you are doing you are obviously not checking the instruments what else are you failing to observe. From some of the posts a few of the things you failed to spot are police cars, speed cameras, the man in the bright yellow jacket holding the hairdrier these could all have been much more serious things to miss. How often do you check your mirrors? Too many people drive on auto-pilot, driving is a skill that needs constant practice. Speeding, parking in stupid places, using disabled bays without authorisation are all just displays of selfishness.
I am not a saint
Are you sure? You havent noticed a glowing ring round your head of late?
My guess ( and it is a guess) is that most people in a built up area simply drive at the speed of the other traffic, unaware of whether the limit has changed or not. Certainly I always brake strongly when I see a speed trap, before checking what speed I am doing and trying to work out what speed limit applies. And given a clean licence and a good accident record, I dont think I'm much different ot most drivers.