Philadelphia is trying something new to combat the congestion in Center City. Starting Monday, the city will begin creating some “bus-only” lanes for SEPTA buses.
You’ll see them on Market Street between 15th and 20th Streets, as well as JFK Boulevard between 15th and 19th Streets
https://philadelphia.cbslocal.com/2021/08/13/philadelphia-center-city-traffic-bus-only-lanes/