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This report describes a method to evaluate land areas on Army installations for use by off-road recreational four-wheel drive (4WD) vehicles. The method describes how to identify incompatible land uses and noise conflict, choose candidate areas, evaluate soil and biological suitability, and develop trails. Also discussed are 4WD user participation, trail design, vehicle operating conditions, and environmental assessment and monitoring. The information in this report focuses on the purely recreational use of 4WD vehicles. The evaluation method is designed to be as nontechnical as possible, so Army personnel normally charged with installation land management can perform the evaluation. The method can also be used for many public and private applications. (Author).