A popular legend that has been around since at least 1937 traces the origin of the 4 ft  in standard railroad gauge to Roman times, suggesting that it was based on the distance between the ruts of rutted roads marked by chariot wheels dating from the Roman Empire. This is encouraged by the fact that the otherwise peculiar distance is almost exactly 5 Roman feet but there is no evidence to span the millennium and a half between the departure of the Romans from Britain and the adoption of the gauge on the Stockton and Darlington Railway in 1825.