ALLEY
巷道
An alley is a narrow service thoroughfare running through the middle of a block that permits access to the rear of the property. Alleys provide access to off-street parking, and typically are used for utility easements, service, and trash removal. They are paved from property line to property line, with drainage at the center of the thoroughfare achieved by an inverted crown. Alley right-of-ways may be as narrow as 12 feet (3.7 meters). However, in newer developments they tend to be 25 feet (7.6 meters) in width to accommodate the desires of fire marshals and utility officials who insist on the largest dimension for the convenience of drivers or life safety reasons. New urbanists have promoted the use of alleys to create a better pedestrian experience,accomplished by accessing garages from the rear and reducing curb cuts for front-loaded garages.
小巷是一条狭窄的服务通道，穿过一个街区的中央，可以进入物业的后部。小巷提供了通往街边停车场的通道，通常用于公用设施，服务和垃圾搬运。他们连接了各物业的用地界线，通道中心的下面是顶部拱形空间形成的排水系统。小巷的有效通行空间可能窄至12英尺（3.7米）。然而，在新开发项目中，它们的宽度往往为25英尺（7.6米），以满足消防和公共事业官员的要求，他们坚持采用最大的尺寸，以方便司机或生命安全的原因。新的城市规划者提倡使用小巷来创造更好的行人体验，通过从后方进入车库并减少前车库的路缘石切割来实现。
