Losing our way on the roadmap of Britain | Letters

Simon Jenkins argues that, since the Department for Transport predicts traffic growth, we should increase road capacity and efficiency (Stop obsessing about planes and trains. Use roads better, 20 October). But the DfT has long over-predicted traffic expansion, and these inaccurate predictions have been used to justify massive investment in road-building schemes over the past few decades, which in turn have attracted more and more cars on to the roads. This is called “predict and provide&r