(a) This section shall not apply to a driver or passenger of:
(1) A motor vehicle manufactured before January 1, 1965;
(2) A bus;
(3) A motorcycle;
(4) A moped;
(5) A motor vehicle if the driver or passenger possesses a written verification from a physician that the driver or passenger is unable to wear a safety belt for physical or medical reasons;
(6) A motor vehicle which is not required to be equipped with safety belts under Federal law;
(7) A commercial or United States Postal Service vehicle which makes frequent stops for the purpose of pickup or delivery of goods or services; or
(8) A motor vehicle operated by a rural carrier of the United States Postal Service while serving his or her rural postal route.
(b) This section shall not apply to a passenger of a school bus.
(c) Each driver and front seat passenger of a motor vehicle operated on a street or highway in the City shall wear a properly adjusted and fastened safety belt, except that a child less than four years of age shall be protected as required in M.C.L.A. 257.710d. Each driver of a motor vehicle transporting a child four years of age or more but less than sixteen years of age in the front seat of the motor vehicle shall secure the child in a properly adjusted and fastened safety belt.
(d) Enforcement of this section by law enforcement agences shall be accomplished only as a secondary action when a driver of a motor vehicle has been detained for a suspected violation of another section of this Traffic Code or the Michigan Vehicle Code.
(e) Failure to wear a safety belt in violation of this section may be considered evidence of negligence and may reduce the recovery for damages arising out of the ownership, maintenance, or operation of a motor vehicle. However, such negligence shall not reduce the recovery for damages by more than five percent.
(f) Points shall not be assessed under M.C.L.A. 257.320a for a violation of this section.
(g) This section shall not apply after April 1, 1989, if, on that date or at any time thereafter, the United States Government requires the installation of passive passenger restraints in new automobiles, whether that requirement is by statute, administrative rule, court decision or any other way.