The infrastructure of the modern road system in the UK grew from rural origins in Hertfordshire. The first Turnpike Trust was established on the former Great North Road at Wadesmill in 1663, just a few miles from the New River, London´s first Aqueduct.
The Sollershot Circus roundabout in Letchworth is famous as the first ´intersection for gyratory movement´ (or roundabout as it later became known) in Britain. It was constructed in 1910 as part of the Garden City design. Although for the first twenty years after it was built there were no clear direction signs apparently no accidents occurred either! The roundabout is now a Scheduled Monument. Britain´s first full-length motorway, the M1, was opened in 1959 and runs through Hertfordshire and Bedfordshire.