Do You Really Have GTFS Data in Public Transport?
- Parabol
- Jul 30
- 2 min read
Today, in the digital transformation of public transport systems, a widely mentioned term stands out: GTFS (General Transit Feed Specification). But do we really know what GTFS is? More importantly, do we actually have it?
What is GTFS?
GTFS is an open, standardized data format that enables the digital representation of a city's public transport system. It includes stops, routes, timetables, service calendars and more. This structure makes it possible to display accurate information on digital maps and transport apps.
GTFS is made up of two components:
GTFS Schedule: Static data such as routes, stops, and times.
GTFS Realtime: Dynamic data like vehicle positions, delays, and alerts.
So, Do You Really Have GTFS?
Many agencies consider their transport data to be “in GTFS format.” However, simply having a few CSV files doesn’t mean you truly have GTFS.
To have a valid and functional GTFS dataset, the following must be ensured:
All core files (routes.txt, trips.txt, stop_times.txt, etc.) must be correctly and consistently structured.
The data must reflect both geographic and calendar accuracy for the service area.
A logical chain must exist between routes, stops, and schedules.
The dataset should be validated and tested in real-world use cases.
Without these, even “GTFS-like” files will fail to deliver proper integration and functionality across systems.
What Does GTFS Enable?
For passengers: Real-time and accurate information on where and when to catch a bus, transfer options, and route planning.
For agencies: A foundation for service planning, schedule optimization, and load analysis.
For systems: Standardization supports easier integration, reduces custom development effort, and promotes an open ecosystem.
Without GTFS, each organization would manage its data in its own way—slowing down collaboration, limiting analytics, and hindering public access to reliable information.
GTFS with Cermoni: More Than Format, A Functional Upgrade
At Cermoni, GTFS conversion isn’t just about producing a file—it’s about making public transport data useful and sustainable.
Our process includes:
Reviewing and structuring fragmented or inconsistent datasets.
Identifying and correcting issues like route mismatches or missing timetables.
Ensuring each GTFS package is validated and integration-ready.
We also prepare data with future use in mind—so it’s compatible with upcoming planning tools and requires no rework.
Common Misconceptions About GTFS
“If we merge stop times and route geometries, that’s GTFS.”❌ Not really. GTFS is a standard, not just a format.
“Each agency can create its own GTFS.”❌ GTFS is a universal standard, not customizable per institution.
“It’s a technical task.”❌ GTFS is also about transportation logic—errors in route structures or missing service calendars make the data functionally unusable.
Final Thoughts: GTFS Is Not Just a Format, But a Foundation
Converting your public transport data into GTFS isn’t just a digital box to tick—it’s a key step toward scalable, integrated, and citizen-focused mobility systems.
📬 Want to discuss your GTFS transformation journey?
Let’s talk