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arXiv · 2508.01121

A Highly Available GTFS-RT Positions System

Joshua Wong·Kin Tsang
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Abstract

We develop a system for real-time public transportation data, deciding to use the data standard GTFS-RT (GTFS Realtime), an open data format for public transit data. We give an overview of the design of a physical GPS sensor device, its firmware, and processes. Next, we give the algorithms used to translate raw sensor data into a public GTFS-RT data feed. We deploy this feed over a highly available cluster across multiple regions to maintain high availability.

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Joshua Wong, Kin Tsang. 2025-08-02. A Highly Available GTFS-RT Positions System. https://arxiv.org/abs/2508.01121

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