New York City's buses are among the slowest in the world, and slow service drives riders to other options. The Transit Priority Atlas, led by Marco Chitti at the NYU Marron Institute, maps and explains the strategies cities around the world use to make street-running transit faster and more reliable. It's a resource for researchers, professionals, and decision-makers.

We handled the data analysis, data visualization, and web development. The analysis compares bus trip conditions across 30 cities, using GTFS schedules published by transit agencies and OpenStreetMap data on stops, traffic signals, and other obstacles along each route. Making data comparable across cities, countries, and agencies took careful standardization, and the site's methods section documents those decisions. Cities like Paris, where buses run about 15% faster than in New York despite greater density, show what's possible. The site is built so its knowledge base can keep growing.