Autobahn style rules would never work over here. Most of the sections which are unrestricted autobahn are dead straight for miles and miles with very little in the way of bends/curves.
For the most part the M1 is nothing like it, let alone the M25.
Absolute nonsense.
A lot of the derestricted autobahn is two lanes, bumpy, twisty and a hell of fun to drive flat-out on.
However, they are widening a lot of the older 2-lane autobahns.
Conversely, there are lots and lots of 3-4 lane autobahn that have both fixed and variable limits ranging from 90-130km/h.
3-lane autobahn around Bremen at 3am: 100km/h.
You can't make blanket statements like that about the autobahn because Germany has over 8,000 miles of it.
I've never driven the autobahn, but I'd heard the standard of driving was much higher? ie lane discipline.
On the whole, yes, but it is getting worse. You still get middle-lane hogged and dawdlers as you would anywhere else, old codgers pulling out in front of you and confused foreigners.
However, the difference is that, on the whole, people are expecting very fast-moving traffic on the Autobahn. Doris in the middle lane of the M1, however, is not.