Avenues can serve a diverse set of functions in a wide variety of land use contexts. Therefore, they are the most common street type in cities. Avenues provide access from neighborhoods to commercial areas, between areas of the city and, in some cases, through neighborhoods.
Avenues provide an ideal transit environment, since they are well designed for pedestrians and provide many connections to adjacent neighborhoods. Transit stops are closely spaced, creating high levels of accessibility to service, and transit use is relatively heavy.
The segments of avenue divided 6 places.
1. Development Zone
2. Pedestrian Zone
3. Green Zone
4. Parking Zone
5. Exclusive Bicycle Zone
6. Motor Vehicle Zone
To maintain comfortable pedestrian travel and serve an important buff er function, as well as enhancing the street for other users, green zone should include grass, landscaping, and shade trees in spacious planting strips or, in some cases, replaced by or interspersed with hardscaped amenity zones. In some Avenue configurations, this zone will also include a median or intermittent “islands” with trees and landscaping.
The 3 lane cross-section with intermittent landscaped islands , not to be confused wit h 2 lanes and a median. This configuration can also be used for a 5 lane cross-section. The advantages of this configuration include better access, while removing turning traffic from through lanes opportunities for pedestrian refuge lower right of way requirements and an additional source for the "green zone”.
Source : www.charmeck.org