Qualification of Operation. A tank vehicle may not be driven by a person who: Is addicted to the use of narcotics or intoxicating liquor; Is not of good moral character; Is mentally deficient or physically defective to such an extent as to impair his ability to properly, conveniently, and efficiently operate the vehicle; Is not experienced in operating motor vehicles and fully competent to operate a tank vehicle; or Has not obtained an operator's or chauffeur's license, or both, as required by Maryland Law for drivers of motor vehicles. Reckless or Unsafe Operation. An operator of a tank vehicle may not operate it recklessly, in an unsafe manner, or in disregard of the public general or local laws or municipal ordinances governing the operation of motor vehicles.