Figure 7.51.3 . Typical section of paved shoulder facility .
B . Wide Outside Lane
For streets that do not have shoulders , a wide outside lane is preferred to safely accommodate bicyclists on a travel lane . In some instances , making travel lanes and left-turn lanes narrower to provide wide curb lanes that accommodate bicyclists may be considered , but should be supported by traffic and engineering studies ( Figure 7.51.4 ).
Design Criteria :
• The minimum width for a wide outside lane is 14 feet for shared use from edge of gutter pan to edge of lane stripe .
• 16-foot lanes are desirable when drainage grates , raised reflectors , or on-street parking effectively reduces the usable width .
• Refer to MUTCD and ASSHTO standards for
Figure 7.51.4 . Wide two lane road above provides ample space for a bicyclist to be separated from traffic .
Chapter 7 : Design Guidelines | 7-19