Assessing the Impact of Sharrows on Bicyclist Behavior: A three-year natural experiment in Santa Ana, California
Mojgan Sami, Soultana Macridis, Deepak Sharma, Oladele Ogunseitan · 2026
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Description
Mojgan Sami and co-authors track, in a 2026 study, what painted shared-lane markings actually did to cycling behavior in Santa Ana, California. Riders and drivers alike judge separated lanes safer than sharrows, the bike symbols painted on shared roads. Cities install sharrows widely anyway, with little proof of effect.
Markings went into a downtown corridor where separated lanes were not feasible. Observers logged fifty-four hours of cycling across two areas from 2015 into 2017. Counts rose one way, then eased back the next year. The pattern was mixed and cautionary overall. Three years of watching real streets gives planners harder evidence than opinion surveys about cheap markings.
Catalog record
| CREATOR | Mojgan Sami, Soultana Macridis, Deepak Sharma, Oladele Ogunseitan |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 32 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |