The monitoring of behaviour, perceptions and attitudes among city dwellers could also add value. It seems natural, however, to focus on casualties as the measurable outcome which matters the most to people. This material should be used to support a more vigorous approach to road safety management, with a goal of closing the gap and matching the best-performing cities. It should also be noted that no single indicator could capture all aspects of performance: a city may perform well on some aspects and poorly on others.