(WPXI) PITTSBURGH — Pittsburgh Regional Transit is reminding drivers that enforcement on the new red bus lanes in Downtown Pittsburgh will begin on Sunday. PRT said that Port Authority Police have been issuing warnings since the lanes were installed last month. According to Pennsylvania law, drivers using bus-only lanes may be issued a citation of $25 with associated fees that will bring the total cost to nearly $200. All private vehicles are prohibited from entering, stopping or parking in the bus lanes, even if it’s briefly. “These dedicated bus lanes are reserved exclusively for buses and emergency vehicles and are clearly marked to ensure the smooth and efficient flow of public transit. Drivers should pay close attention to street signage and lane markings to avoid violations,” PRT said in a release.