Cambridge DZBL

“How Pavement Markings Influence Bicycle and Motor Vehicle Positioning: A Case Study in Cambridge, MA” is a study that examined the effects of a newly created Door Zone Bike Lane.

The center of the Bike Lane that was placed for evaluation in this study is just 9.5 feet from the curb; hence the moniker Door Zone Bike Lane. So, to be safe from suddenly opening car doors, bicyclists must avoid the 5 foot wide Door Zone Bike Lane and operate in the 10 foot wide “motor vehicle lane,” where they are persona non grata.

Critique of: “How Pavement Markings Influence Bicycle and Motor Vehicle Positioning: A Case Study in Cambridge, MA” HERE describes how the authors of this study rationalize hazardous design for people using bicycles.

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