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USA

Helmet laws and promotion

California helmet law

Its scope, compliance and effect

Published papers

Intended and unintended consequences of youth bicycle helmet laws  

Study of 20 states where "the laws significantly reduced youth bicycling". Has weaknesses.

The effect of bicycle helmet legislation on bicycling fatalities  

Fatalities reduce by 15% in the long term, but "there must be other time-varying factors that influence juvenile bicycling fatalities more than helmet laws", such as the US national 21% reduction in bicycle use associated with a 12% reduction in fatalities.

Data

Cyclists requiring treatment in US hospitals 1991 to 2000

FARS bicycle helmet use data

A discussion about its limitations

NEISS data on bicyclist injuries

1991 to 2005

Participation in bicycling in the USA

Trends in bicycling and mountain biking.

External resources

US cyclist fatality trends