How can we fit cycle tracks into Britain’s crowded towns and cities? It’s just not practical to have them on every road.

No, and that’s not what we’re advocating. For example, Danish traffic design works around separation principles depending on the speed, and volume of traffic.8

At speeds of up to 20mph, or 30mph on roads with fewer than 2,000 vehicles a day, mixing bikes and other vehicles is fine. As speeds and traffic volumes rise, paved shoulders, cycle lanes and ultimately fully separated cycle tracks are provided. Adopting these principles here would mean that most residential roads, as long as they’re not rat runs, would not be affected.

It’s the big fast rural roads – where there is plenty of space to provide parallel tracks – and the urban throughways which blight many of Britain’s town centres that we’d like to see redesigned to give space back to people on foot and on bikes.