4 ms·

Parent did not say that helmets make you less safe. They said that helmets make drivers around the biker behave more dangerously. https://www.bicycling.com/new

• brandmeyer 5y ago
  3.5 inches on an average of ~1 meter was the measurement, in a study that a single researcher performed using himself as the rider. This result is both weakly supported and small, and it shouldn't be considered actionable.