Watch the latest episode of铁路建造的建筑and you'll get to explore an exceptional piece of our network – the world's largest working mechanical signal box.
主持人Tim Dunn访问Shrewsbury火车站的Severn Bridge Junction昨天today at 8pm, where our signallers are doing “one of the last steam-age jobs on the network,” according to signaller Jamie Green.
II级上市建筑房屋180个杠杆，所有约会从1903年到来。该盒子不仅仅体现了一种罕见的传统，它继续在现代铁路上进行一个重要的功能。
Severn Bridge Junction, which opened in 1904, will remain open for the foreseeable future, although Network Rail is updating signalling across Britain to providerbetter, more reliable and more frequent services. The introduction of new rail traffic management technology will lead to much greater capacity for passengers and freight operators.
However, signallers like Jamie remain crucial to Shrewsbury, ensuring all trains pass safely through the station without state-of-the-art technology.
点击画廊查看Severn Bridge Junction，Sexters Jamie Green和Kevin Collins，以及1962年的信号师：
三层高，杰米和他的同事是一个远离大部分网络的世界。该团队将计算机系统和纸张作为备用，但通常从内存工作，根据火车应到达的平台，在特定序列中拉动杠杆。
Jamie says: “It’s very satisfying the way it connects together. It’s like a mechanical jigsaw puzzle.”
Origins
两家铁路运营公司 - 伦敦北部铁路和伟大的西式铁路 - 共同努力，尽管它们之间的竞争，但在斯密斯伯里融合了五条线。他们与南威尔士州和西北部的工业化地区连接到南威尔士州的煤炭和材料用品，并在利物浦和伦敦运输乘客。
点击画廊查看Severn Bridge Junction的计划，外观和左侧信号盒中的视图：
铁路建造的建筑– London St Pancras International
今天在1848年开业的什鲁斯伯里站比喜欢德比的人不那么忙，但它是历史上被称为重要商业活动的集线器。事实上，1905年1905年的铁路杂志的JT劳伦斯劳伦斯撰写的一篇文章描述了该车站作为“开关板”，有声称交通更多“互换并在什鲁斯伯里重新分配而不是约克”。
它说：“虽然Shrewsbury站的主要重要性在于其各种联系，但不得认为当地条件不重要。该镇是英格兰和威尔士的主要农业区之一的中心。“
On its name, Lawrence added: “There does not seem, at first sight, to be much connection between Shrewsbury Railway Station and the Severn Tunnel. In fact, to the casual observer, the only point of common interest would appear to be that the one goes under the river whilst the other stands on top of it. But, nevertheless, it is to the Severn Tunnel that Shrewsbury owes the position it claims as one of the most important distributing centres in the country – if not the most.”
Click on the gallery to see more images:
Network Rail is proud of its遗产，哪个日期来自19岁thcentury. It works with railway heritage organisations to document the与信号箱相关的历史，操作和生活方式，其中许多列出。
在10月份的周一，网络铁路毕业生群体正在访问Severn Bridg亚搏彩票软件官网e Junction，渴望了解有关传统铁路运营的更多信息。
在杰米和同胞凯文柯林斯的密切监督下，他们轮流运作沉重的信号？在伦敦＆西北铁路的杠杆设计中具有明显的差异，是一个难得的机会。Shrewsbury的人是不寻常的，每个人都以杠杆前面而不是手柄后面的捕获。
The signaller’s cloth, not strictly necessary at Shrewsbury, protects levers at other signal boxes from losing their polish. Jamie says: “We’re keeping the tradition alive.”
Network Rail graduates from the Western and Wales routes:
中间巡回赛，杰米通过移动点 - 与允许火车更改轨道的信号互锁的轨道互锁 - 使用Edwardian Equipments互锁。
1905年，劳伦斯称赞该车站的信号系统，注意到其护栏。它们沿着轨道沿着受限制的间隙（如桥梁和隧道）的区域奔跑，以保持火车的车轮，以便它们离开线路。
他说：“走近站的线条在稍微短半径略微的曲线中布置，并且保护轨道的系统值得通知。而不是常见的情况，而不是常见的情况，它们与相应的面对点处于明显的连续性，并且任何脱轨似乎都是不可能的。“
They remain in place today, specifically because of the tight curvature around the station.
宝贵的经验
奥利弗·伊斯兰在今天的旅行中基于西方和威尔士航线的研究生师之一。他组织了访问自己，使他的年轻同事能够体验运营信号环境并与现代铁路运营中心（ROC）对比。
He said: “Having chosen the signalling discipline and having experienced life at Network Rail for over a year, this was my first visit to a mechanical signal box. It is a very useful thing for new graduate engineers to see so that they can learn about mechanical signalling, and especially aids electrical graduates when they come to making the choice between the signalling and telecoms or electrification and plant disciplines. I hope the visit inspired some of the new engineers to pick the signalling and telecoms discipline.”
今天Severn Bridge Junction今天没有与英国的现代铁路运营中心相似。攀登黑暗，狭窄的楼梯后，游客享有罕见的全景享有奖励 - 南部的什鲁斯伯里城堡，在清澈的天气下，地平线上的Shropshire山丘说，杰米：“在这里，阳光灿烂的日子不会浪费。”
点击画廊看看Severn桥联盟和工程师检查系统:
阅读更多：
Preserving railway history: five things saved by Network Rail