An Act amending Title 75 (Vehicles) of the Pennsylvania Consolidated Statutes, in general provisions, further providing for definitions; in rules of the road in general, further providing for maximum speed limits, providing for maximum speed limits enforced by local law enforcement officers with RADAR and further providing for speed timing devices; and imposing penalties.

SB 509 amends Pennsylvania's vehicle code to clarify speed enforcement rules for radar, laser (LIDAR), and other speed-measuring devices. It requires that evidence from these devices can only be used to convict drivers who exceed speed limits by 10 mph (or 6 mph on roads over 55 mph), with exceptions for school zones and work zones. The bill also sets new rules for local police using radar, mandating municipal ordinances, officer training, visible patrol vehicles, and warning signs before enforcement begins. This directly affects drivers (through stricter evidence standards), local law enforcement (through new operational requirements), and municipalities (requiring ordinance adoption).