英国东海岸铁路干线从伦敦至爱丁堡全长630公里,1849—1852年间由多家铁路公司修建,是连接大城市的一条干线,具有适应较高行车速度的良好地形。二次世界大战后,英国铁路面临公路、航空运输竞争的局面,显然,提高行车速度和缩短行程时间,成为改善铁路 The British East Coast rail link runs 630 kilometers from London to Edinburgh and was constructed by several railway companies between 1849 and 1852. It is a main road connecting major cities and has good terrain adapted to higher traffic speeds. After the Second World War, the British Railways faced the competition of highways and air transportation. Obviously, increasing the driving speed and shortening the journey time became the key to improving the railway