Army Regulation (AR) 600-55 Practice Test

A valid OF 346 or DA Form 5984-E is required for an Army service member to drive off installation because these forms serve as official military driver's licenses that document an individual's qualifications and authorization to operate specific military and government vehicles. The OF 346 (U.S. Government Motor Vehicle Operator's Identification Card) and DA Form 5984-E (Government Motor Vehicle Operators Identification Card) are designed to ensure that personnel operating government vehicles have met the necessary training and competency standards. This requirement is crucial for maintaining safety on and off military installations, as it helps ensure that only qualified individuals are driving vehicles that may be used in various capacities.

While a valid state driver's license (mentioned in another option) is also important for driving civilian vehicles, military regulations specifically designate the need for official military documentation when operating government vehicles. The remaining options, such as the DA Form 348 and the Military Driver's Log, pertain to different aspects of military driver management and are not primary documents for authorization to drive off installation. The DA Form 348 is used for recording personnel qualifications, while the Military Driver's Log is an operational tool for tracking driving tasks rather than serving as a legal authorization document.