[QUOTE 2639071, member: 9609"]You're probably not too far out with that figure. I think 80% is a reasonable figure to apply to all road users when the choice is between slowing down or going too close when passing a cyclist. . Car drivers may appear to give more room more of the time, but that is just because they have more room to play with.[/quote]
All vehicles have the option to pass fully out into the oncoming lane, cars and trucks. They should ONLY do this when it is safe to do so, and that means that if they cannot do so then they should wait until they can. The big lorries dont do this , they are the main culprits for squeezing past even when they have a lane to pull out into. Just because the truck is so dam big doesnt give the driver the right to mow a cyclist down. Move out, slow down and and BACK OFF! Human life is worth more than getting a delivery target met or whatever else it is that these drivers have to meet.
No excuses, just back off and pass slow and wide. Simples.