伊人久久大香线蕉综合AV_亚洲好穴_WWW激情内射在线看_亚洲色网址_欧美日韩成人一区_国产吃奶摸下激烈视频无遮挡

Welcome to Aigre?

more>>Industry Overview

News

Understand Urban Rail Transit 6
addtime:2022-03-07click:343


Section 6: Modern Tramways

The tram, which emerged early in the 20th century, fell into obscurity due to outdated technology, slow speeds, bumpy rides, and noise. However, with increasing urban vehicle congestion and pollution, the tram's benefits were revisited. Driven by new technology, the modern tram has returned, recognized for its affordability, environmental friendliness, comfort, and convenience.

A tram is an electric, rail-guided, medium-capacity urban rail transit system operating on city streets, either as a single car or articulated in pairs. It can be classified by floor height (high or low), power supply (conductor rail or overhead contact system), and wheel-rail type (steel wheel on steel rail or rubber wheel on guided track).

Modern trams offer transport capacity between light rail and buses, reaching 10,000 to 12,000 passengers per hour. They have strong climbing abilities and small turning radii, enhancing flexibility. Modular design allows for easy extension of train length and maintenance. Compared to subways, modern trams are cheaper (1/6 of subway costs per km and 1/3 of light rail), with lower operational costs and higher benefits. They are environmentally friendly and energy-efficient, consuming only 1/9 of the energy of cars and 1/4 of buses.

Construction methods are flexible: reusing existing tram lines or abandoned railways, building new lines, or sharing tracks with mainline railways. These options not only leverage existing resources but also alleviate urban traffic pressure with minimal investment. New tram lines can harmonize with the urban environment, serving as both transportation and scenery. Sharing tracks with mainline railways extends tram services to city outskirts, solving the last-mile problem and increasing passenger flow.


主站蜘蛛池模板: 欧美精品日韩一区 | 撕开奶罩疯狂揉吮奶头 | 亚洲精品在线视频免费观看 | 四虎永久在线精品8848A | 中文字幕一区二区三区夫目前犯 | 国产精品99久久久久久宅男小说 | 无码熟妇人妻在线视频 | 丰满妇女伦大片免费看 | 色诱视频网站免费观看 | 精品黄网 | 久久综合射| 一本一本久久aa精品综合 | 国产精品久久久久人妻无码 | 美女自卫慰黄网站 | 中文字幕在线播放一区 | 免费看无码自慰一区二区 | 新久草在线观看 | 日日夜夜操网站 | 蜜桃精品免费久久久久影院 | 嫩模被啪的呻吟不断 | jk白丝极品被cao到流水呻吟 | 欧美与黑人午夜性猛交久久久 | 欧美一区精品 | 91视频日本 | 亚洲国产精品一区二区久久亚洲午夜 | h人成在线看免费视频 | 少妇的丰满2中文字幕 | 国产肉体XXXX裸体784大胆 | 99久久亚洲综合精品成人网 | 日本91网站 | 亚洲精品国产成人av蜜臀 | 日本不卡视频在线观看 | 狍和女人一级毛片在线看 | 国产一二区免费视频 | 三年片在线观看免费大全爱奇艺 | 国产又粗又黄又爽又硬无遮挡 | 欧美1页| 一区在线视频 | 精品日产卡一卡二卡麻豆 | 亚洲旡码欧美大片 | 亚洲精品视频中文字幕 |