Having a look at accidents on F.B. how these so-called HGV Drivers Slam in the back of cars is just unreal, their licence ( HGV ) should be taken off them for a couple of years.
Sorry for the delay Baldric, it was something i'd seen on F.B. it was the HGV Side of the site, It's unbelievable to see some of these clowns drive, in my years of driving I have never come unstuck, a lot seen to drive to the end of their windscreen.
I base my gap on a minimum of two seconds, double that in wet weather. At 70MPH, you are travelling at 103 feet per second. If something spins out of control in front of you. 1.5 seconds is not a big enough gap. I used to use the motorways five days a week and the standard of driving is appalling. There needs to be far much more lane discipline enforced by the police.