In his post Dtg lists a few reasons:

People driving with the 'flu? (I've done it)
Driving after having had no sleep in 48 hours? (Junior Doctors?)
Driving having just had an argument with the boss?
Driving while on anti-histamines?
Driving while talking to your passengers?

The list goes on...


I would add to that list one of my pet peeves.....Talking on the phone while driving!

Watching someone trying to negotiate a 90 degree turn with one hand whilst juggling the phone with the other drives me nuts...especially when they have small children on board! This is NOT limited to women either!!