(a) The negligence of a pedestrian, bicyclist, or other non-motorized user of a public highway involved in a collision with a motor vehicle shall not bar the plaintiff's recovery in any civil action unless the plaintiff's negligence is:
(1) A proximate cause of the plaintiff's injury; and
(2) Greater than the aggregated total amount of negligence of all of the defendants that proximately caused the plaintiff's injury.
(b) Nothing in this subchapter shall be construed to:
(1) Change or affect the doctrine of joint and several liability or the last clear chance doctrine; or
(2) Reduce the legal protections provided to pedestrians and cyclists under:
(A) § 7-1004; or
(B) § 50-1606.