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The paper presents and discusses results of the FAT research project “Loading Limits and Injury Mechanism of Belted Occupants in Lateral Collisions.” Knowledge of load limits and injury mechanism is a mandatory for the definition and assessment of measures to further increase existing levels of vehicle occupant protection. The effectiveness of vehicle engineering measures is examined by one of the means of experimental simulation utilizing dummies. One of the purposes of this research project was to determine the suitability of dummies as test devices for lateral impact testing. In this connection, correlation of dummy loads and occupant injuries was to be examined in order to establish occupant protection criteria for the marching of test results with dummies with the real world accident scene. The behavior of cadavers and HSRI-, APROD- and Hybrid II dummies is compared in 90° lateral impacts with 50 km/h impact velocity.