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
Defensible transit analytics
From raw GTFS to board-ready briefings in minutes.
Bring GTFS, Census, and NTD data into one auditable workflow. Marga surfaces headway audits, peak vehicle requirements, equity snapshots, and source-backed follow-ups in chat.
- 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
Daily Briefing
WatchService quality3 of 12
5 routes end weekday service before 9 PM
5
of 26 weekday routes end before 21:00
- Runs past evening21
- Ends before 21:005
Five routes finish their last weekday trip before 21:00 — worth a look if evening coverage is on your board agenda.
query_gtfs
Ask follow-up Show me another
One of twelve findings Marga surfaces from a typical week's GTFS — auditable, drillable, and dressed for the board packet.
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.
Marga changes the workflow. If you can type a question, you can analyze your entire network.
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 — usually within an hour.
2
See what Marga found
A Daily Briefing 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
Three reports your team actually uses
Auto-generated on every GTFS load. Each finding cites the query and the source table — defensible enough for a board packet, drillable enough for a planner's follow-up.
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
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.
Try it now — no sign-up neededMarga 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:
get_frequency_gapsquery_gtfsQueries your GTFS directly
Every answer comes from SQL queries against your GTFS tables — routes, stops, trips, calendars, and stop times. No hallucinations, no approximations.
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.