G . Bicycle-Activated Detector Loops
Intersections with high traffic volumes and / or high-speed motor vehicles are often very difficult for bicyclists to safely cross . Placing bike activation on these streets gives bicyclists preference on demand without causing undue delay to motorists . On main street intersections , the activation can prolong the green phase and extend the time needed for bicyclists to clear the intersection .
Design Criteria :
• Detector loops should be installed within the roadway to detect bicycles with metal rims .
• Detector loops should be installed at busy signalized intersections to allow safe crossing of bicyclists .
• Provide detector loops that do not require a push button to activate the system .
• Provide pavement markings to instruct cyclists on how to trip detector loops ( Figures 7.52.15 through 7.52.18 ).
Figure 7.52.17 Pavement marking used to help bicyclists locate loop detectors at intersections .
Figure 7.52.15 . Pavement marking used to help bicyclists locate loop detectors at intersections .
Figure 7.52.16 . Loop detector signage can guide bicyclists on how to use detector loop . Figure 7.52.18 . Recommended detector loop patterns sensitive enough to detect bicycles .
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