Thanks to Michelle for sending from DDOT:
“The 2020 Annual Visitor Parking Passes (paper placards) are still valid through April 15, 2023. Residents are encouraged to sign up for ParkDC Permits and access their new digital Visitor Parking Permit.
For help with ParkDC Permits, please view our FAQs and How-to Guides. If you have any questions about ParkDC Permits or need assistance signing up, please call our call center at (202) 671-2631. Our representatives are ready and available to assist you.”