We talk a lot about Main Line railways but what are they and how do they differ from other lines?
一个简单的答案是，我们通常用干线来描述大城镇和城市之间的主要铁路连接。
从历史上看，它适用于路线的名称，如西部，东部，米德兰，大西部，布莱顿和大西部。今天我们也用它来描述高速1.
Victorian Main Lines
干线起源于维多利亚时代的铁路革命。历史上的英格兰说that from 1830 the railways built around the world were based on利物浦和曼彻斯特铁路– the first steam-powered, inter-urban railway for passengers and goods in the world.
This new railway would dramatically reduce the time it would take to transport goods between Liverpool and Manchester. Goods traffic between the cities had reached an all-time high in the 1820s, according to the科学与工业博物馆.
The Observer newspaper reported in September 1830:“货物从纽约运到利物浦的时间比从利物浦运到曼彻斯特的时间要短。”
然而，历史上的干线也包括次干线和支线。它们的特点是一些国家规章制度、机械牵引和客货运输。
繁忙的伦敦至乡村线路
Recently, we’ve used more specific terms than simply Main Line to refer to the difference in usage for different parts of our railway.
We did this to allow policy to be applied more strategically to different parts of the railway:
- 主要-高速、大吨位、客货混合航线
- 伦敦和东南部——伦敦commut高密度er routes (and feeder routes) with varying tonnages of freight traffic
- 二级-直达航线，不包括在一级或伦敦和东南部，载客和货运混合
- rural – mostly lightweight, infrequent and short passenger trains, with occasional locomotive-hauled passenger, freight or engineering trains
- 货运-货运列车，通常以低速行驶
更广泛的干线铁路网
但是主线和主线不同– a term we use to describe almost all the railway in Britain.
虽然干线是一条主要路线，如前面提到的，但干线基本上是英国国营铁路公司管理的英格兰、威尔士和苏格兰铁路的每一部分。亚搏彩票软件官网
这排除了以下情况：
- 地铁和其他轻轨系统
- 在功能上与干线铁路的其他部分分开的网络，仅用于本地、城市或郊区客运服务的运营
- 通过自己的网络运营的遗产、博物馆或旅游铁路
- 私人拥有的基础设施，仅供其所有者用于其自身的货运业务
阅读更多：
Read the George Stephenson notebook online
Film: the magic of the Glenfinnan Viaduct
Film: discover the Network Rail archive