Line 45: |
Line 45: |
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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== |