(a) A person may not purposely obstruct or block traffic on any roadway by any means. However, a service vehicle such as a bus, garbage truck, tow truck, or ambulance may make brief stops on a roadway, which stops on the roadway are necessary in the performance of its services.
(b) A person operating a motor vehicle at any time on a two-lane roadway outside of an urban area shall pull the motor vehicle off the roadway at the first opportunity to pull over safely if there are five or more motor vehicles immediately following that motor vehicle. A person operating a motor vehicle who violates this subsection is guilty of an infraction as described in AS 28.90.010(d) and shall be punished by a fine of at least $100.