What is this project for?

This project allows you to fetch public transport data (vehicles, routes, trips, stops, etc.) and store it locally as JSON files for analysis, debugging, or offline use.

What data source does it use?

The application uses data provided by Tranzy. The availability and structure of the data depend on the selected agency.

Do I need an API key?

Yes, depending on your setup. You may need to configure an API key before making requests.API Keys can be obtained by creating an account on Tranzy.

Why do I need to select an agency?

Each agency provides its own dataset. Selecting an agency ensures the correct data is fetched.

Why does nothing happen when I try to download?

Make sure an agency is selected, the data has finished loading, and there are no errors in the console.

Why are some files empty?

Some datasets may not be available for certain agencies or at certain times.

Can I use this offline?

Yes, if the data is stored locally. Otherwise, an internet connection is required to fetch new data.

Is this an official Tranzy tool?

No, this is a personal project built for learning and experimentation.

What technologies are used?

The project is built using vanilla JavaScript, the Fetch API, DOM manipulation, and JSON data handling.

Why was this project built?

The goal was to practice working with APIs, asynchronous data, and structuring a frontend application without relying on frameworks.