V2EX curb extension

Curb Extension

Definition / 定义

(城市道路设计)路缘延伸、路侧外扩:在人行道边缘向车行道方向做局部外扩的设计(也常称 bulb-out),用于缩短行人过街距离、减慢车速、改善视距,并可为树池、路灯、雨水花园或停车管理提供空间。(在英式/美式城市工程语境中较常见)

Examples / 例句

The city added a curb extension to make the crosswalk safer.
城市增设了路缘延伸,以让人行横道更安全。

By combining a curb extension with better signage and lighting, the redesign reduced speeding and improved pedestrian visibility at night.
通过将路缘延伸与更好的标志和照明结合,这次改造减少了超速,并提升了夜间行人可见度。

Pronunciation / 发音

/kb kstnn/

Etymology / 词源

curb 原指“路缘石、马路牙子”(也有“抑制、约束”之义),在道路语境里主要取“路缘”的意思;extension 来自拉丁语词根,意为“延伸、扩展”。合起来 curb extension 字面就是“把路缘向外延伸”,对应具体的街道工程做法。

Related Words / 相关词汇

Literary Works / 文学作品

  • NACTO Urban Street Design Guide(NACTO《城市街道设计指南》):在街道安全与“路口优化”中常讨论 curb extensions/bulb-outs
  • FHWA Pedestrian Safety Guide and Countermeasure Selection System(美国联邦公路局行人安全指南):将 curb extensions 作为常见安全对策之一。
  • Janette Sadik-Khan, Streetfight: Handbook for an Urban Revolution:讨论以街道再设计(常含路口外扩等措施)提升步行与交通安全的实践。
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