Yes, speeding is dangerous and should be punished - but on a couple of recent motorway trips, for every driver driving too fast, I've seen:

- At least 2 drivers using mobile phones - one of these, driving a 'people carrier', full of people, came very close to colliding with me because he abruptly attempted to change lanes with insufficient observation.

- 3 or 4 lorry and coach drivers who think that they can change lanes whenever they like - and to hell with any car drivers who happen to occupy the lane they have chosen to move into.

- 6 or 7 drivers not keeping up with the speed of the traffic and driving too slow. I call these people 'deadly creepers' because they cause other drivers to brake (often leading to the familiar 'ripple' effect whereby brake lights start coming on ahead for no apparent reason)and also block exits and entrances to the motorway.

I'm sure, given time, I could think of more - but just prosecuting speeders is very one-dimensional and doesn't cover many other forms of poor and dangerous driving.