Auditable transit analysis

Transit analysis your team can inspect, explain, and defend.

Marga runs deterministic checks across GTFS, ridership, Census, and NTD data. Review service standards, investigate gaps and outliers, and prepare source-backed evidence for project reviews, staff reports, and board materials.

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  • Loaded in a day
  • Works with public GTFS
  • No new data warehouse
  • Supports your team, doesn't replace it
  • Built for small and mid-size transit agencies

Make service data easier to inspect, explain, and act on.

The answers are often already in GTFS, Census, NTD, and agency ridership files. Marga helps planning and data teams connect those sources into clear, defensible findings.

Ask a planning question, inspect the result, and trace it back to the underlying data.

How it works

Three steps to answers

1

Share your GTFS feed

Send us a link. We load and validate your routes, stops, trips, and schedules.

2

See what Marga found

A Service Snapshot surfaces the headways, gaps, equity coverage issues, and feed-health items worth your attention.

3

Drill down in chat

Click any finding to open it in chat — same numbers, same sources, room to ask the follow-up that matters.

What you get

Checks your team can rerun

Rerunnable as the data changes. Each finding names its sources, assumptions, and caveats, so staff can verify it before using it in a report or a presentation.

01

Headway & span audit

Routes exceeding your peak headway target, short weekday spans, and weekend gaps — surfaced against your own service-standard targets.

service qualityservice standards snapshot
02

Coverage & equity snapshot

ACS block-group overlays for low-income, zero-vehicle, senior, and youth populations. Walkshed checks against your stops. Equity gaps mapped, not just listed.

service equityboard-ready
03

Feed health check

Missing shapes, calendar exception density, wheelchair flags, expiring feeds — data-quality checks that are easy to miss before a public feed or analysis goes live.

GIS / data teampre-publish

Who it's for

Built for the people who move transit forward

Planners & Schedulers

Analyze headways, flag frequency gaps, and evaluate service changes in plain English — every result traceable to the source.

Agency Leadership

Get clear answers for board presentations and public meetings. Ask a question, cite the data, move on.

Advocates & CBOs

Build source-backed cases for equity, coverage gaps, and underserved communities — with outputs staff can review and share.

Live Demo

Test drive Marga: San Diego MTS

See how Marga handles real transit queries using the current San Diego MTS GTFS feed. Try asking about routes, schedules, service patterns, and more.

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Marga Chat
Which routes have the worst midday frequency gaps?
You

8 routes have inconsistent midday service — the gap between the longest and shortest scheduled headway exceeds 15 minutes. Route 955 is the worst at 23-minute spread, followed by 874 (19 min) and 833 (17 min).

Data sources:

Frequency & gapsSchedule data

Deterministic calculations, labeled assumptions

Every figure comes from repeatable analysis of your source data — routes, stops, trips, calendars, and stop times. Estimates, proxies, and limits are labeled, so your team decides how far a result should be pushed.

AI explains, never invents

The language model translates your question into data queries and explains the results in plain English. Every claim cites the underlying data.

Your data stays yours

Multi-tenant by design. Each agency sees only their own data. No cross-contamination, no shared models, no data brokering.

Get Started

Ready to query your own network?

Try the live demo with San Diego MTS data — no sign-up needed. Want to load your agency's GTFS feed? Get in touch and we'll have you up and running in a day.

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