There was considerable variation in helmet use depending on the type of site at which the bicyclist was observed. The probability sample for this data collection focused on collector and neighborhood streets. It is thus appropriate to report a statewide helmet use rate only for data associated with these types of sites. Helmet use was also related to the characteristics of the observed cyclists. The use rate was generally higher for cyclists older than 18 years, as well as for children 0-5 years old.
Further results show greater helmet use among cyclists who treat bicycling as a serious activity.
On the other hand, helmet use among those for whom bicycling appears to be a casual activity is quite low.