Protected bike lanes provide significant traffic calming in the form of max car speed reductions.
- study compared the speed reduction impacts of bike lane designs in Asbury Park, NJ
- painted bike lanes
- reduce average right turn speed 11-15%
- no reduction in speed of cars driving straight
- protected bike lanes using “vertical delineators” (flex posts)
- reduce max right turn speed 28%
- reduce average right turn speed 21%
- reduce speed of cars driving next to the bike lane by 8%
Sources
- Traffic Speeds Decrease When Bike Lane is Present, 2024
- The Traffic Calming Effect of Delineated Bicycle Lanes, 2024