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Contribute

Found incorrect info? Prices changed? New metro line opened? We want to know.

Report a correction

The fastest way to report an error is to open a GitHub Issue . Include the city name, which section is wrong, and what the correct info should be. If you can link to an official source (transit authority, airport website), even better.

Add a new city

Every city is a single YAML data file following a strict template. If you've recently visited a city we don't cover, you can submit a Pull Request with the new city file. We'll verify the data against official sources before publishing.

Quality rules

✓ Every data point must be traceable to an official source
✓ Personal experience must be from within the last 12 months
✓ If unsure, mark as "Unverified" — we'll check it
✗ No copy-pasting from blogs, forums, or other guides
✗ No AI-generated content without human verification