Islands of connectivity - mapping tools to make bicycle connectivity visible - CityLab

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"Nobody wants to ride their bike in the left lane of a six-lane road with 40-mile-an-hour traffic. It's crazy," says Peter Furth. He's a civil and environmental engineering professor at Northeastern University and co-author of a new report out from the Mineta Transportation Institute that looks at how varying levels of "traffic stress" on different city streets can limit where people are willing to ride.

Furth and his colleagues mapped out the different levels of stress on the streets of San Jose, California, and they find that while many streets are calm enough for most riders, they're sliced up by streets with high levels of stress. High-stress streets are measured as those with high speed limits, limited or non-existent bike lanes and signage, and large distances to cross at intersections.

The map below shows how high stress streets create islands of low-stress bikeability that are disconnected from each other.

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Islands of connectivity - mapping tools to make bicycle connectivity visible - CityLab

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