The Senior Clipper card is all that seniors need, and unlike the RTC card, it’s free and never expires. If you are 65 or older, it’s easy to get a Senior Clipper card. In Oakland, you can apply for a card at the AC Transit & Clipper Customer Service Center (8:00 a.m.-5:00 p.m., Mon-Fri) or at the Lake Merritt BART station Customer Service Center (7:30 a.m.-5:00 p.m., Mon-Fri).