Part of Oral Answers to Questions — Home Department – in the House of Commons at 5:36 pm on 7 November 2011.
We are in the middle of several pilots considering whether chevrons can help drivers work out how much space they need. One of the challenges is that heavy goods vehicles need much longer stopping distances than cars, which is something to bear in mind as well, because there is no point in cars stopping in time after an accident if the HGVs behind have not left themselves enough stopping distance.