Parking apps in cities like Boston, LA, and DC each require a separate account and stored payment method, so a driver visiting three cities in a month must manage three different parking apps

Most U.S. cities have contracted with a single mobile parking payment provider -- ParkMobile in some cities, PayByPhone in others, ParkBoston in Boston, ParkNYC in New York. These apps are not interoperable. A consultant, sales rep, or delivery driver who parks on-street in multiple cities must download each city's designated app, create an account, enter payment information, and learn a different interface for each. There is no universal parking payment standard or reciprocity agreement between providers. So what? Drivers arriving in an unfamiliar city face a choice between fumbling to download and set up a new app while parked (risking a ticket during setup) or hunting for a physical meter that may not exist because the city removed meters in favor of app-only payment. So what? App-only zones effectively fine visitors and infrequent parkers who don't have the local app, creating a regressive penalty that falls hardest on gig workers, tourists, and low-income drivers who may also lack smartphones or data plans. So what? Cities that adopt app-only parking see increased citation revenue from confused drivers, creating a perverse incentive to maintain the fragmented system. So what? The fragmentation prevents aggregation of parking occupancy data across cities, blocking the development of nationwide real-time parking availability maps that could reduce the 30% of urban traffic caused by drivers circling for parking. So what? The lack of a parking data standard means smart city and autonomous vehicle initiatives cannot reliably locate available parking, creating a barrier to the transportation technologies cities claim to want. The structural root cause is that cities issue exclusive or semi-exclusive parking payment contracts through municipal procurement processes optimized for guaranteed revenue share, not for interoperability. Each vendor's business model depends on lock-in: the more cities use their proprietary platform, the more user data they accumulate. There is no federal or state standard for parking payment interoperability, and no industry consortium has formed because each vendor benefits from fragmentation.