Colin Miller mostly grew up in Austin, Texas, where he developed an early interest in software and maps. After his freshman year of college, he launched his first startup, Redistricter, which took off far faster than expected. He left school and moved to New York to pursue it full-time.
A year later, he created Subway Builder, a hyper-realistic game that lets players design subway systems from scratch while navigating real-world constraints and costs. The game simulates millions of commuters using Census and Redistricter data, powered by the same pathfinding algorithms people rely on to get to work. Your job is to design a route network that gets the most people to their destination as fast as possible.
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Greg Feliu is a data engineer and analyst focused on transportation analytics, with projects ranging from modeling subway–bus transfers to clustering NYC subway stations by ridership. Drawing on public ridership data and GTFS schedules, he builds minimal-assumption models to estimate ridership on each subway line, combining data modeling with subject-matter expertise to reveal how New Yorkers move through the system with The Busiest Subway Lines in NYC, Ranked.