About yamtam - Yet Another Mass Transit All-in-One Map

Every system, one map

yamtam brings the entire NYC-area mass transit network together on a single, fast, offline-capable map — subways, LIRR, Metro-North, NJ Transit, PATH, AirTrain JFK, the Roosevelt Island Tram, NYC Ferry, the Staten Island Ferry, MTA buses, and Citibike.

Why you'll like it

Live arrivals Real-time countdowns for every stop, refreshed every couple of minutes — with express trains grouped with their local route and same-direction arrivals combined under one heading.
Service alerts, when they matter Alerts per station and per line, planned work shown separately, with clear start/end times.
Accessibility you can trust Live elevator and escalator status with outage details for every station.
Everything about the station Every entrance, bathrooms, borough, division, Wikipedia and neighborhood links — and one merged view for stations that span several stops.
Weather at a glance A live weather banner plus a 24-hour forecast and alerts for your area.
Works offline Install it as an app on your phone or desktop — the map and data are cached so you can check arrivals even without a signal.
Find your way Jump to any station by name, see your nearest stops from GPS, save HOME / WORK / favorites, and follow the built-in NYC Tour Guide.
Make it yours Light, dark, or system theme — and turn each transit system on or off.
Widgets & watch Drop any station's arrivals onto your phone's home screen or watch with a compact widget view.
From the terminal too Get the same arrivals in your shell with the yamtam command-line tool.

Built for everyone, including developers

Every data file the site uses is served publicly as open JSON and GeoJSON, so you can build your own apps on top of the same live transit data. There's also a Python CLI (pip install yamtam) that mirrors the map's arrivals logic.

About the author

yamtam was created and is maintained by Shawn Tolidano — a lifelong New Yorker who wanted one place to see the whole metropolitan transit system, even when the subway is underground and the signal isn't.

Questions, feedback, or ideas? Feel free to email Shawn — he reads everything and loves to talk transit.

Under the hood

yamtam is built on open data and open source: map tiles from OpenStreetMap, real-time feeds from the MTA and other agencies, and a serverless pipeline (AWS Lambda + S3 + CloudFront) that refreshes everything every couple of minutes. It's a private project on GitHub — this page itself was assembled with help from an AI assistant.