moreover policy makers and road safety experts have to understand that they have great opportunities to win when they operate together with other important areas such as traffic management and environmental policy measuring progress can be done by means of information that is collected every day every week every month every quarter every year or at a longer interval monitoring can establish whether developments are still on track compared to a policy goal and monitoring can establish whether new and undesirable developments have surfaced the sooner we axe aware of such developments the better we can prepare suitable countermeasures