Non si può dire infallibile, ma ecco quanto dice
Wikipedia:
Cita:
The pioneer of railways, George Stephenson, spent much of his early engineering career working in the mines of County Durham. There, the pony-pulled coal mine rail systems all used this gauge. The Stockton and Darlington Railway (S&DR), the world's first steam-powered railroad, was mainly used to transport coal from the mines to British seaports; the S&DR's track gauge was required to accommodate the horse-drawn carts used in the mines. This influence appears to be the main reason that this particular gauge became the standard, and its usage became more widespread than any other gauge.
George Stephenson lavorò molto tempo in miniere vicino alla Stockton-Darlington, la prima ferrovia a vapore, quindi costruì tale linea nello stesso scartamento dei carrelli della miniera. Questa sembra la principale ragione per cui tale scartamento sia considerato standard, aiutato dalle opere di George Stephenson. (nota scritta altrove nella stessa pagina: in origine lo scartamento normale inglese era di 1422 mm ovvero 4'8'', poi allargato a 1435 ovvero 4 peidi e 8 pollici e mezzo)
Cita:
A popular legend traces the origin of the 4 ft 8½ in (1435 mm) gauge even further back than the coalfields of northern England, pointing to the evidence of rutted roads marked by chariot wheels dating from the Roman Empire. This legend is regarded as mostly false, however, except inasmuch that it shows a historical tendency to place the wheels of vehicles approximately 5 ft (1500 mm) apart.
Una leggenda popolare porta le origini dei 1435 mm ai solchi dei carri romani. La leggenda è considerata generalmente infondata, ma sembra che la tendenza storica sia stata di mettere le ruote distanti fra loro circa 5 piedi (un metro e mezzo).
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