carlosflanders wrote:
There was a study published a few years ago that cars specifically gave more space to riders without helmets.If you mean the Walker study, they effectively retracted that. Here is the re-analysis: Bicycle Helmet Wearing Is Not Associated with Close Motor Vehicle Passing: A Re-Analysis of Walker, 2007
Here is the conclusion: "After re-analysis of Walker's data, helmet wearing is not associated with close motor vehicle passing. The results, however, highlight other more important factors that may inform effective bicycle safety strategies."