7.5.2 Bicycle Intersection Crossing Facilities
The design of bike lanes at intersections is complicated by the need to accommodate numerous turning movements by both motor vehicles and bicyclists , often with limited available space . Intersections represent one of the primary conflict areas between motorists and bicyclists . Generally , the larger the intersection , the more difficult it is to cross safely .
A . Bike lane at an uncontrolled intersection :
• Bike lane stripes typically are not extended through a pedestrian crosswalk or any street intersection ( with the exception of dashed lines , which is optional through some intersections ).
The recommended designs are based on the assumption that motorists making right turns should make their turn from as close to the righthand curb as practical ; bicyclists going straight ahead shall be to the left of right turning traffic ; and bicyclists turning left should turn from a left turn lane or as close to the centerline of the left side lane as practical . Proper pavement markings and signalization can help prevent future motorist and bicyclist accidents ( Figure 7.52.1 ).
Figures 7.52.2 through 7.52.10 are typical occurrences . Refer to AASHTO Design Guidelines for further design requirements and guidance .
Figure 7.52.1 . Bicycle traffic signal can be used in combination with other traffic signals .
Figure 7.52.2 . Example of bike lane markings at an uncontrolled intersection .
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