tailieunhanh - Design Manual Metric 2009 Part 12

Tham khảo tài liệu 'design manual metric 2009 part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | b Directness. Locate facilities along a direct line and in such a way that they connect bicycle traffic generators for the convenience of the users. Bicyclists are interested in the same destinations as motorists. c Access. When locating a shared use path provide adequate access points. The more access points the more the facility will be used. Adequate access for emergency and service vehicles is also necessary. d Shared Use Path Widths. Figure 1020-13 shows the widths and minimum horizontal clearances needed when a shared use path is on an alignment separate from a highway right of way. Figure 1020-14 shows shared use path width when adjacent to a roadway and within its right of way. See 2 e to find if a barrier will be needed. e Available Roadway Width. For a bike lane or shared roadway with or without signing the overall roadway width must meet or exceed the highway minimum design criteria. See Chapter 430 Modified Design Level and 440 Full Design Level and Figures 1020-14 and 1020-15 for further width information. f On-Street Motor Vehicle Parking. Consider the density of on-street parking and the safety implications such as opening car doors. If possible select a route where on-street parking is light or where it can be prohibited. g Delays. Bicyclists have a strong desire to maintain momentum. If bicyclists are required to make frequent stops they might avoid the route. h Traffic Volumes and Speeds. For an on-street bikeway the volume and speed of auto traffic along with the available width are factors in determining the best location. Commuting bicyclists generally ride on arterial streets to minimize delay and because they are normally the only streets offering continuity for trips of several miles. The FHWA has developed a spreadsheet to evaluate roadways for bicycle compatibility. The Bicycle Compatibility Index BCI measures roadways based on traffic volume speed lane width and other factors. A copy of the BCI and supporting information is found