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Countermeasures That Work: A Highway Safety Countermeasures Guide, Ninth Edition,

2017: This 9th edition of Countermeasures That Work is a basic reference to assist State Highway Safety Offices in selecting effective, evidence-based countermeasures for traffic safety problem areas. These areas include: Alcohol- and Drug-Impaired Driving; Seat Belts and Child Restraints; Speeding and Speed Management; Distracted and Drowsy Driving; Motorcycle Safety; Young Drivers; Older Drivers; Pedestrians; and Bicycles. The guide describes major strategies and countermeasures that are relevant to SHSOs; summarizes strategy/countermeasure use, effectiveness, costs, and implementation time; and provides references to the most important research summaries and individual studies.