Drivers will be required to pay for parking at all meters and kiosks.
It's part of a phased approach that began in Center City last Monday.
For the past 12 weeks, the PPA focused only on safety violations due to the COVID-19.
Customers are encouraged to make contact-free payments through the PPA's mobile payment app, meterUP. Mobile payments can also be made via meterUP by calling 1-877-727-5303.