Performant intracontinental public transport routing in Rust
I made a public transport route planning program that's capable of planning journeys across Europe or North America! There's only one other FOSS project I know of (MOTIS/Transitous) that can do transit routing at this scale, and in the testing I've performed mine is about 50x faster. I've spent a few weeks on this project now and it's getting to the point where I can show it off, but the API responses need a lot of work before they're usable for any downstream application. Example query (Berlin to Barcelona):…
Performant intracontinental public transport routing in Rust launched on December 14, 2024 with 167 votes, #250 of 5,365 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
This is a public transport route planning program written in Rust that can plan multi-country journeys across Europe or North America. It is designed for developers and transit applications seeking efficient routing solutions. The software performs significantly faster than comparable open-source alternatives, though the API responses currently require further development before integration into downstream applications.
written from the facts on this page · September 2026
From the sources
Fast multimodal routing in Rust designed for memory-constrained machines - ellenhp/solari
Solari is a high-performance transit routing engine built using the RAPTOR algorithm , optimized for lightweight, global-scale public transit routing. Designed to serve developers building applications requiring fast and resource-efficient transit planning (e.g., maps apps, trip-planning APIs), it avoids heavy preprocessing steps while supporting planet-scale coverage through memory-mapped timetables. curl -d ' {"from":{"lat":47.679591,"lon":-122.356388},"to":{"lat":47.616440,"lon":-122.320440},"start_at":1742845000000} ' \ https://transit.maps.earth/v1/plan GTFS Compatibility : It used to be pretty simple to get a Solari instance up and running but we added support for pedestrian routing…from github.com
In the maker’s words, at launch
I made a public transport route planning program that's capable of planning journeys across Europe or North America! There's only one other FOSS project I know of (MOTIS/Transitous) that can do transit routing at this scale, and in the testing I've performed mine is about 50x faster. I've spent a few weeks on…
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Source: Show HN post ↗ · launch text quoted in part
