PARIS:Boulevard Peripherique

Says Gerondeau: “The result of this little change was remarkable. It was such a great improvement, people asked where did the traffic go? Many did not realize the road had even been restriped. In fact it was the same traffic but it just ran much more smoothly in the new lanes.”

[The BP is an early urban motorway design and has some 37 interchanges in about 30km (18mi) which encourages a great amount of weaving – at which French motorists excel, so driving it is no piece of cake for the inexperienced.]