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Bikeway selection
Each jurisdiction needs to make decisions about what kind of treatments and cycling infrastructure should be installed to make cycling safer, more comfortable and/or more efficient.
==Making decisions based on traffic volume and speed==
Sustrans Design Manual provides guidelines on both the type and level of service required for a cycling route.〔(【引用サイトリンク】url=http://www.sustrans.org.uk/sites/default/files/file_content_type/sustrans_handbook_for_cycle-friendly_design_11_04_14.pdf )〕 Both motor vehicle traffic volume and speed influence the decision on the need to segregate cyclists from other traffic. In some cases restraint of traffic speeds and volumes through traffic calming measures may be used
to create satisfactory conditions to encourage new and novice cyclists to use the roadway. If route is an identified main cycle route it will be given a higher level of service than other cycle routes. Main cycle routes are more likely to have segregation and wider widths to accommodate higher volumes of people cycling.
With average car traffic speeds above 40mph or with traffic volumes above 10,000 motor vehicles per day, Sustrans recommends physical separation. And on roads that exceed both, the recommendation is to provide physical separation with a road verge (boulevard).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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