(a) Except as otherwise provided in subsection (b) of this Code section, no department motor vehicles shall be used by any member of the Uniform Division except in discharge of official duties. Any other equipment shall be used only with the express written approval of the commissioner. The commissioner shall adopt rules and regulations governing the use of equipment subject to approval of the Board of Public Safety.

(b)(1) Members of the Uniform Division may use a department motor vehicle while working an approved off-duty job, provided that:

(A) The off-duty employment is of a general nature that is the subject of a contract between the off-duty employer and the Department of Public Safety and is service in which the use of the department motor vehicle is a benefit to the department or is in furtherance of the department's mission;

(B) The off-duty employer agrees to pay and does pay to the department an amount determined by the commissioner to be sufficient to reimburse the department for the use of the vehicle and to pay the off-duty employee sufficient compensation. Pursuant to such contract, the department shall pay the employee of the department the compensation earned on off-duty employment whenever such employee performs such service in a department motor vehicle; and

(C) The commissioner has specifically approved, in writing, the individual use of the vehicle by the employee.

(2) At no time will an off-duty employee be allowed use of a department motor vehicle at any political function of any kind.