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| | ==Residential collector road== | | ==Residential collector road== |
| | + | The function of these streets is to act as connectors between |
| | + | residential neighborhoods and other collectors and arterials. |
| | + | The character of these streets can vary widely from completely |
| | + | residential to pockets of commercial or mixed use landuses. |
| | + | Other characteristics include: |
| | + | • Moderate to high traffic volumes, average daily traffic |
| | + | 1500 to 3000 vehicles |
| | + | • Street parking is atypical unless there are adjacent |
| | + | mixed uses. |
| | + | • Often have multi-modal use, transit, pedestrian, and |
| | + | cyclists |
| | + | • Institutions such as schools, recreational facilities, and |
| | + | churches are often located along collectors |
| | + | Typical LID opportunities |
| | + | Within the roadway: |
| | + | • Permeable pavement should be avoided for high traffic |
| | + | travel lanes, but they are an option for parking lanes |
| | + | and sidewalk. Pervious concrete or porous asphalt are |
| | + | options for bike lanes. |
| | + | • Perforated pipes are suitable for collectors with very |
| | + | limited space and particularly where there is no |
| | + | routine landscaping maintenance. However, adequate |
| | + | pretreatment such as grass swales, extended sump |
| | + | catchbasins, or prefabricated units must be provided. |
| | + | • Curb extension bioretention is not a common practice |
| | + | for collectors, but they can be used in some cases to |
| | + | reduce pedestrian crossing distances at intersections |
| | + | Within the boulevard: |
| | + | • Collectors with few driveway access points and |
| | + | continuous stretches of open boulevard space are good |
| | + | candidates for bioswales |
| | + | • Institutional uses along collectors offer opportunities for |
| | + | innovative LID solutions. Runoff can be treated within |
| | + | adjacent park space or on school properties where |
| | + | agreements have been made with school boards. These |
| | + | areas are also good opportunities for LID showcases or |
| | + | demonstrations. |
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| | ==Local Industrial road== | | ==Local Industrial road== |