Abstract
Authors assumed that the origin of the standard gauge of the railway is in the interval of wheel tracks of ancient carriages such as war chariots, two-wheeled carts and four-wheeled wagons. Basing on the assumption, authors have measured the interval of wheel track at ancient ruins and ancient highway of the Eurasian Continent and the African Continent for long years. On the other hand, the oldest vehicle that exists in the world is chariot of Tut-ankh-Amen who was the Pharaoh of ancient Egyptian of the 18th New Dynasty before 3,500 years and another two chariots of the former dynasty. Authors visited at the Egyptian Museum in Cairo for four times till now and observed six chariots in detail that were displayed inside the glass case. Considering findings of the interval of wheel tracks, authors report the specifications of Tut-ankh-Amen's chariots in this paper.
