May I add that though I see a lot of social engineering on our roads, some of which makes them more dangerous -long curves with the wrong camber, roundabouts planted so that one can't see across them- there are too many drivers who are not engaged, not thinking at all and need retraining. The pleasure to be gained from driving quickly comes from thinking and looking ahead. Some speed limits seem abitrary and there are times when I find myself exceeding them too and here I am thinking of a local road which has excellent sightlines, is about twenty miles in length through open country, and has a limit of 90kph ( agreed that this is the national speed limit for these kinds of roads)but there are other roads where I would not achieve this speed because there are too many potential hazards and so am being constantly overtaken by drivers who suddenly have to brake because of something that they didn't anticipate. I saw a driver recently plough through a group of farmyard ducks on a road through a village where he should have kept his speed below 50kph and where it was obvious that there were farm entrances and exits. Just my pennyworth.