This study is directed toward developing the most practical measurement technique for measuring wet-pavement friction for road sections other than the straight, level portions currently measured. The measurement system must be capable of operating at traffic speeds and not interfere with normal traffic flow. The equipment should not be overly complex, should have its own watering system, its own data collection system and most importantly, be compatible and correlatable with surface friction testers in current use. This study has demonstrated that measurements on nontangent sections can be conducted with an ASTM E-274 skid trailer when it accurately measures both the dynamic longitudinal and vertical forces on the test wheel during locked-wheel tests.