Research the system.
Build the tools.

I’m Hanyang Tang, a transportation researcher and software builder at MIT. I study how people move through cities and build software to analyze transit networks and test service changes.

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Selected work

All projects
VIGO Route showing Boston journey alternatives and a Red Line–Orange Line itinerary

Transit networks

VIGO

An open-source routing engine built in Rust for fast journey planning and city-scale accessibility analysis.

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VEXTA writing workspace with sample Markdown source and preview

Research workspace

VEXTA

A local-first research workspace for LaTeX, Typst, and Markdown, with live previews, data exploration, visual boards, and presentations.

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Close-up of a Paris Métro map generated by MapEX

Transit cartography

MapEX

Compile a GTFS feed into a schematic map, then refine its stations, lines, and labels in Studio.

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Research

DC Student TravelReconstructing school journeys from partial records. WorldformSynthetic populations, daily activities, and urban simulation.