[Sundae]

Sorry, V.
It might be lost in translation, but I really do think it's just semantics.

What I was saying was that the only thing I can control is how far I am behind the car in front.
Using the word "trouble" was obviously not advisable, it's just the way I see it when I am driving.
I know I can control the problem of being in a pile-up by staying a decent braking distance behind the vehicle in front and especially allowing for the conditions.
I cannot control the problem of how fast the person is driving behind me, or how close they are.
Even if I can stop a sensible distance behind the vehicle in front, I can still be shunted into it by a less sensible driver behind me.
Doesn't stop me driving carefully though.

When driving in Wales I often pulled over in lay-bys, bus stops etc to allow traffic past. Because I did not know the roads and wanted to drive at or below the speed limit.

I usually drive in the "slow lane" on the motorway and only pass where necessary because I am more concerned with my own speed than keeping up with the flow of traffic in the other two lanes (the vehicles I pass are usually those with trackers, like coaches and lorries, so they drive at 50 or 60).

And yes, I have had people pull in front of me or overtake me for no more reason than that I have left a large gap. I just hang back a bit more.