Beginning Monday, April 13, 2020, Pittsburgh, Pennsylvania’s Port Authority will be limiting how many people are permitted on buses and light rail vehicles. To make sure riders have enough space to spread out and to prevent overcrowding, effective at the start of service no  more than 25 riders will be permitted on a 60-foot articulated bus or light rail vehicle at one time If a vehicle reaches the maximum number of riders, drivers have been instructed to not pick up new passengers until others exit. If standby vehicles are available, they will be sent to pick up riders who have been passed up.

-via Press Release