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Roads (公路 )

Updated at: 2018-12-04 新题 预测 机经题

Roads of rails called Wagonways were being used in Germany as as 1550. These railed roads consisted of wooden rails over which horse-drawn wagons or carts moved with greater ease than over dirt roads. Wagonways were the beginnings of modern railroads. By 1776, iron had replaced the wood in the rails and wheels on the carts. Wagonways evolved into tramways and spread throughout Europe. Horses still provided all the pulling power. In 1789, an English man, William Jessup designed the first wagons with flanged wheels. The flange was a groove that allowed the wheels to grip the rail better; this was an important design that carried over to later locomotives.
early primitive