Editing Curb extension (section)

==Uses==
Curb extensions are used to:
* Increase the visibility of pedestrians by enforcing the "daylighting" of the intersection and encouraging pedestrians to wait in a more visible area.
* Reduce crossing distances for pedestrians.
* Provide space for ramps on the sidewalk where it would otherwise be too narrow.
* Slow down traffic by visually narrowing the roadway and reducing the turning radius of drivers. This is especially useful for calming fast traffic turning from a major to a minor road.
* Shield [[Parallel parking|parallel parked]] vehicles from oncoming traffic.
* Protect passengers embarking and particularly disembarking from [[tram]]s, [[bus]]es, and level-grade urban [[light rail]] systems, particularly when [[retrofitting]] existing [[street]]s. In other words, curb extensions prevent buses from needing to pull over to side of the road to release and receive passengers.
* Provide protection for pedestrians, possibly by including a [[Traffic barrier|pedestrian barrier]], preventing pedestrians from [[running]] straight from the premises over the road.
* Provide room for [[U-turn]]s on [[superstreet]]s.<ref>{{cite news|url=http://www.independenttribune.com/news/neighbors-fear-speeding-traffic-on-new-section-of-george-liles/article_4c7d25a8-0ef4-11e6-968a-e71a8e18014e.html|title=Neighbors fear speeding traffic on new section of George Liles Parkway|last=Plemmons|first=Mark|work=[[Independent Tribune]]|date=April 30, 2016|accessdate=April 30, 2016}}</ref>

Curb extensions are also used when [[retrofit]]ting existing streets to accommodate [[congestion charging]] schemes - hitherto wide (sometimes multi-[[lane]]) roads are deliberately narrowed to ensure that the charging equipment can see passing vehicles, and the charging equipment (and often bollards or other barrier devices) are placed in the expanded sidewalk area (to prevent drivers from circumventing the charging system's [[camera]]s and detectors).