I was always taught that the speed limit was a "LIMIT" ..not a "TARGET" ...
Definitely a target, it's actually a failure/points against in a driving test.
If someone is of the opinion that the "safe" speed to be driving is 10 miles below the limit, THAT IS THEIR RIGHT, and no-one has any "duty" to drive at the speed "YOU" want to go at.
They'd fail a retest by doing that but if they are happy to pull in to a layby every few minutes to let people pass then I'm cool with that.
Somewhat inaccurate and, possibly deliberate distortion of the truth ?? The requirement of the driving test, at least in all 4 that I've done over the years .. bike, car, HGV, PSV, is to "make progress given the road conditions" ... this means ..
where feasible, to drive at the speed limit, it does not mean "maintain the speed limit regardless".
When taking my HGV test I deliberately did NOT accelerate to the speed limit when it changed from 30 to 40 as I knew the road then became a downhill section with a roundabout at the bottom, and it had started to rain. My reasoning was rain on a previously dry surface, downhill, having to brake in a vehicle weighing over 10 tonnes empty, made it a dangerous manoeuvre. I guess the instructor agreed as I passed the test.
When taking the "bus" test it was common NOT to reach the 50mph speed limit on one dual carriageway as there were bus-stops every few hundred yards and you never knew when the examiner would ring the bell.
Again, I passed, so it would appear to be the correct way of driving .... a LIMIT ..depending on conditions
NOT a TARGET .. to be hit at all times
All the posts above (not counting the "wrong lane" idiots - another story completely) simply assume the "slower" driver is useless .. perhaps they actually have a REASON for driving slowly, have they seen a dog/child/cyclist that you haven't ?? Have they "read the road" differently to you and don't wish to slam on the anchors at the upcoming hazard ?? Lots of very good reasons for not blindly driving at (or above) the speed limit that it would appear many drivers don't consider .. because.. after all, everyone is the best driver in the world .. aren't you ??