From NYPD Data to Your Morning Commute: How Trakkr Builds a Station Report
From address to answer: Find the nearest station, pull Trakkr's forecast for it, layer in three live MTA feeds — done in under two seconds.
When you type an address into Trakkr and hit "Check Safety," a short chain of steps runs in the background. Here's what happens, in plain language, and why each step is there.
Look up your address
Trakkr converts the address you typed into a precise spot on the map, using Mapbox. We constrain the search to the five boroughs so a typo can't accidentally send you to a sound-alike street in another state.
Find the nearest station
Trakkr knows the location of every subway station in NYC and finds the one closest to where you're going. The eight nearest stations are also pulled in case you want to compare nearby options on the map.
Pull Trakkr's forecast
Once a month, Trakkr looks back over years of data and produces a fresh set of predictions for every station and every elevator and escalator unit. When you ask about a station, we just look up that station's most recent forecast — that's why answers come back in a fraction of a second.
Check what's broken right now
At the same time, Trakkr pulls live updates from the MTA: which elevators and escalators are out at this exact moment, what's already scheduled to be down later today, and which units serve the accessible path through the station. Forecasts tell you what's likely. Live updates tell you what's actually happening.
Layer in subway service alerts
Trakkr also reads the MTA's live service-alert feed for every line that runs through your station — delays, planned work, service changes, suspensions — and groups them into a single status for each line. That's the live panel you see on your dashboard.
All of it lands in one report
By the time the page finishes loading, you have one screen that tells you: the closest station to where you're going, the borough, what Trakkr's forecast says about safety, which specific elevators or escalators are flagged as risky, every subway line that runs through the station, and any live alerts on those lines.
The forecast tells you what's likely based on years of patterns. The live updates tell you what's true right now. Together, that's the full picture for the next 30 days and the next 30 minutes.
Two public datasets, three live MTA feeds, the address lookup, and your station's forecast — assembled into one answer in under two seconds. That's the whole engine.