sometimes you see people's vehicles moving from one side of the lane (and sometimes out of it) to the other....I always avoid those people.....they're sms-ing!
I've also learnt that Friday afternoon - women phone regarding their weekend plans. Absolutely no concentration on the roads.
Women around schools dropping their kids....they don't need a phone to be dangerous, they are killers!
(I believe women are generally better drivers than men, when they're concentrating! so not being sexist - My mum, wife and a female friend rank in the top 5 drivers I know!)