How we are slowing down

45.9 second per mile: Average delay for motorists on local A-roads last year 348.3 seconds per mile: Average delay in City of London (up from 279.6 seconds per mile in 2015) 6.9mph The average speed in the City of London 100.8 seconds per mile: Average delay on roads across London 16.6mph Average speed of vehicles across London 112.8 seconds per mile: Delay in Slough 324bn Record number of vehicle miles travelled across Britain last year 49bn miles travelled by vans – up 5 per cent 37.3m Record number of vehicles in UK