Having ridden from Birmingham to Bristol (M5) yesterday afternoon I can say that it has made a difference, most drivers were only using the two outer lanes for overtaking and returning to the inside lane after such moves. When I say most, there were exceptions If I get a car at some point in the future I want a BMW or a large Audi as it appears that the new offences now mean that they must not use the inner two lanes Over a distance of about 15 miles one of each never moved from the outside lane at any point, during that distance I used all three. both were travelling in excess of 90mph. I'm not able to tell you how I know this, but trust me it is fact.