The Portland Bureau of Transportation spent several years testing out the effectiveness of a program that subsidizes transportation options for people who live in low-income housing developments, many of whom spend a good chunk of their income on transportation. We checked in on this program last year, when it was in its second iteration as a pilot and already garnering positive results.
Now, the Transportation Wallet for Residents of Affordable Housing pilot is moving on up the PBOT project ladder and will be fully implemented this spring under a new, less verbose name (Transportation Wallet: Access for All).