Close passes

[Gary Cziko]

Bicycle drivers and CyclingSavvy have a solution for this:

https://www.seattlebikeblog.com/2025/05/19/uw-researchers-using-25-handlebar-sensors-find-correlation-between-close-passes-and-past-collisions/

[Alan Forkosh]

The article does devote a paragraph to that:

"There’s also the issue that rider behavior affects the results. For example, someone following vehicular cycling best practices (Cascade Bicycle Club has a program they call “Urban Cycling Techniques” that cover these concepts) would be more likely to “take the lane” when there is not enough space for safe passing. So their sensor might not pick up a close pass that a more novice rider (or someone who otherwise doesn’t feel comfortable taking the lane) might experience if they are trying to stay right to allow passing. In my experience, streets with very skinny lanes often feel safer because there is no question that I should take the full lane and that anyone looking to pass should change lanes to do so. It’s those streets with awkwardly wide lanes that are the worst because there isn’t really room for safe passing, but it sorts of looks like there might be. This leads drivers to try to squeeze by, which can lead to scary situations. What I’m saying is that there’s a lot of nuance to account for in a larger deployment of this tech.”

So, a reader of the article could conclude that education might be more effective that all the physical interventions.

Alan Forkosh                    Oakland, CA
afor...@mac.com

https://al4kosh.com

On May 20, 2025, at 9:08 AM, Gary Cziko <gcz...@gmail.com> wrote:

Bicycle drivers and CyclingSavvy have a solution for this:

https://www.seattlebikeblog.com/2025/05/19/uw-researchers-using-25-handlebar-sensors-find-correlation-between-close-passes-and-past-collisions/

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[Pete van Nuys]

Yes, below is a reader's comment expressing, shssssss, don't say it too loud, Vehicular Cycling principles. Tell me you're a vehicular cyclist without telling me you're a vehicular cyclist.

To view this discussion visit https://groups.google.com/d/msgid/caboforum/8ED79B33-74C2-409E-8192-477F210F1FBA%40mac.com.

[Harry Lichtbach]

"Rules of the Road" cycling.

On Tue, 20 May 2025 10:58:27 -0700, Pete van Nuys <petev...@cox.net> wrote:

>Yes, below is a reader's comment expressing, /shssssss, don't say it too
>loud/, Vehicular Cycling principles. Tell me you're a vehicular cyclist

>>> <https://groups.google.com/d/msgid/caboforum/CABUB_YxKPDJhqMWzKcw7CNcn_XKE0-x4M27HahzvCYrT7MZp9g%40mail.gmail.com?utm_medium=email&utm_source=footer>.

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*-*-*-*-*-*-*-*-*
Harry Lichtbach
LCI #1047
Past Chair Almaden Cycle Touring Club Bicycle Driving Academy
San Jose, CA. USA

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