More obeying 30mph speed limits
Driving groups believe this is because of the increasing numbers of speed cameras and a series of hard-hitting road safety campaigns. The rising cost of fuel has also been cited, with drivers lowering their speeds to improve economy.
According to the Department for Transport, 70% of cars travelled at speeds in excess of the 30mph limit in 1997 but this has now fallen below half.
The reduction in speed has also been credited with a fall in road deaths, which dipped below 3000 for the first time since reports began in 1926 last year.