The manual ‘Helmets: a road safety manual for decision-makers and practitioners‘ is one of a series of documents produce by an informal consortium (GRSP, WHO, the FIA Foundation and the World Bank) that aims to provide guidance to countries on how to implement some of the recommendations identified within the World Report, and thus improve their overall road safety record. This manual provides practical advice to road safety practitioners on how to achieve a much higher proportion of users of two-wheeled vehicles wearing helmets.