[quote="Rigpig]... and here we get to the root of the problem - that wonderfully British 'territorial' disposition espoused by Ben Elton in his "Double Seat" sketch.

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..which leads on to the related issue (and my pet hate) of attitudes of some drivers when traffic merges when a lane is closing.
There are the holier than thous who change lanes at the first suggestion of a closure, and self appointed trafpols who police a lane signed to close by straddling the white lines. I have even seen artics swerving into cars - squeezing them against the central reservation for daring to use a piece of open road.
We all have our opinion of the driver who drives past the line of queues right up to the closure, but good on them IMHO. Coming to a halt in order to attempt to leave a closing lane 1 mile or more from where it eventually closes effectively adds 1/3 of a mile to the queue on a three lane road going to two lanes.
I have noticed driving through France, Italy and Germany that they tend to give perhaps 5k's warning of impending roadworks and then only a few hundred meters of signage rather than our 1mile/800/600yds etc. before the lane actually closes to prevent the well intentioned (or holier than thous) attempting to change lanes too early.
And then of course there is the strict enforcement of 'merge-in-turn' which encourages the use of all the road and maintains traffic flow, but relies on courtesy and the exact opposite of the British territorial attitude so eloquently described by Mr Elton.
As an experiment, when a section of the M74 south of Glasgow was being resurfaced, merge-in-turn was implemented on the northbound approach to the lane closures while southbound was left as the usual free-for-all. It was obvious to anyone passing through which side had the best traffic flow, and it was here, after a relatively steady progress through the northbound works I witnessed on the soutbound queue the life-threatening antics of the artic driver thinking he was being noble protecting his front from what he considered a queue jumper.