Cyclists.
I am a cyclist, and therefore consider myself to be in a privileged position to have a damn good rant about certain other road-going cyclists.
1) Wear reflective gear. Just because you can see the car doesn't mean the car can see you. Especially if you wear black.
2) ...following on from above - wear the gear in the daytime and night. It may not look cool, but its better than being a hood ornament on a Volvo.
3) Lights. That poxy reflector on the back of your bike is just not good enough. You need a steady light and a flashing LED on the back, a recharge-able halogen on the front (with a back-up.) Remember - you can see the car; it has big lights. The car cannot see you.
4) The pavement is for pedestrians. You are riding a bike. If you're scared of the road, then walk. Idiot.
5) Wear a helmet. Casualty doctors and nurses have better things to do with their time than scoop up the brains of people who felt they looked a bit silly wearing a helmet.
6) Traffic lights and stop signs apply to you too, moron.
7) There is no number 7 (apologies to All Back To Mine)
Whew. That feels better. Can't beat a damn good rant of a Monday morning. It really sets one up for the week.