(a) Parking is prohibited on all roadways. No vehicle on the Thruway system shall be parked, stopped or allowed to stand on the traffic lanes, acceleration lanes, deceleration lanes, bridges, access ramps or on shoulders in front of service areas.

(b) Stopping is prohibited on the shoulders of the traffic lanes except in an emergency, or when authorized by the State Police or an employee of the Thruway Authority. In the event that it is necessary for the driver of a truck or tractor trailer to leave such vehicle on the Thruway unattended and it is impossible or impractical, in the opinion of the State Police, to have such vehicle towed off the Thruway, the driver shall obtain a parking permit from the State Police before leaving the Thruway system.