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New study: Two-way bike lanes produce more injuries

From: domainremoved <Adina>
Date: Wed, 21 Aug 2019 08:00:00 -0700

Honorable Council Members,

Thank you for taking action and finding a solution that will protect
the new 9th grade students starting school at TIDE Academy and
hopefully getting the school culture started in a way that minimizes
driving, improves health for students and reduces car traffic for our

In considering designs for our streets, an article published in the
last few days has some interesting and relevant information.

"A new study is finding that the safest bike facilities on busy
streets are Dutch-style, sidewalk-level bike lanes or protected bike
lanes with no driveways or intersections, such as those on bridges.

And a surprising number of injuries are happening in two-way,
street-level, protected bike lanes.

The Insurance Institute for Highway Safety study recently analyzed 350
bike-injury cases in New York, Washington and Portland in order to
determine which street designs were safest for those on two wheels.
The study surveyed injured riders who were treated in hospitals."

“Two-way protected bike lanes alongside two-way vehicle traffic add …
complexity as turning drivers need to monitor both oncoming vehicle
traffic and two-way bicycle traffic in the bike lane,” author Jessica
Cicchino and her research team wrote."

The study had some limits, and more research will need to be done to
more fully understand the safety consequences and tradeoffs of designs
appropriate for different locations. The study is a good and
informative example of the rapidly growing knowledge base about how to
design safer streets,

"One limitation of the study was that the authors did not compare the
safety of the different bike lanes based on the severity of injuries
that occurred in them. The study also did not control for the busyness
of streets; those with two-way, protected bike lanes may have been the
most crowded with drivers and pedestrians, producing more conflicts."

Because knowledge of best practices is growing and changing, this
creates opportunities and challenges for our community, including
residents, policymakers, and commissioners, and professional staff, to
keep up.

Thank you for your consideration,

- Adina
Adina Levin
Menlo Park Resident
Received on Wed Aug 21 2019 - 07:53:47 PDT

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