Life & fun · alternatives · 2026
24 alternatives to Public transportation signage based on bloom filters (rough mockup)
Hello, I was running around Germany, hectically navigating public transportation, and getting lost all the time. I noticed that every station had i platforms, each used lists of n buses (trains, whatever) arriving, each has their list of m destinations. That means I would be scanning i x n x m items just to see if I was at the correct stop. As I was nervous, for every bus that arrived, I would rescan the list of stops to double check. I began thinking how I could make a better system. Linked is a very shoddy mockup of how bloom filters could be used to allow passengers O(1) lookup time for…
This project proposes using bloom filters to improve public transportation signage at busy stations. Instead of scanning through multiple platforms, buses, and destinations to find the correct stop, passengers could… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Public transportation signage based on bloom filters (rough mockup) launched in 2023; newer entries below may have overtaken it.
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This was something I built while trying to look for housing in Toronto that was decently transit-accessible to my office while still cheap. The backend is written in Rust. It parses public GTFS data from transit agencies and performs a simple heuristics-based BFS on the bus lines to calculate how long to reach all points in a city. The frontend uses React and Mapbox GL to render each individual road segment based on how long it takes to reach. This project was a great excuse to learn Rust, deployments, and mapping. The source code is here if you are interested:…
2023 · map.henryn.xyz · its alternatives →
- 2NS
Hello HN! As a long term NYC resident, I have read countless articles on ideas tweaking subway services, but always found them hard to follow without visual aid. So over the long weekend I decided to build one. It has all the basic features: trains would spawn at their origin, stop at stations, and slow down if it gets too close to another. You can also design custom routes by piecing tracks together. Have fun, and let me know what you think!
2025 · buildmytransit.nyc · its alternatives →
- 3
For the past few months, I've been working on a website that answers two different questions: - Where in my city have the best travel times to all the things and people I care about? - Given a listing, how far is it from all the things and people I care about? Personally this was fueled by my own frustrations when I was apartment hunting in NYC. I was frustrating to have to juggle so many Google Maps tabs when I was evaluating a listing, and it was also annoying to not have full confidence that I was even searching in the right places. I wanted to be close to work, a Trader Joe's, and a…
2025 · theretowhere.com · its alternatives →
- 4BFBloom Filter▲65
2017 · sacert.github.io · its alternatives →
- 5
Hi HN! Sharing Random Airport Inspired by RandomStreetView (which I find weirdly addictive), and a passion for air travel. Probably not for everyone, but I hope some of you find it interesting! Needless to say, open to feedback! Enjoy clicking! Further reading: TECH: It's Build in React, NodeJS, with a Notion DB. The code is public on Github. It is spaghetti though ... Especially open to feedback here. DB: The db is publicly available (and editable), I can add the link in comments if anyone would like to have a look . KNOWN ISSUES: I would like to improve the design, pic loading performance…
2023 · randomairport.onrender.com · its alternatives →
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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):…
2024 · github.com · its alternatives →
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I just redesigned an old (1 year) project and would appreciate any feedback. The site has no real purpose other than allowing you to explore the large amount of imagery gathered by Google. You can make it less random by choosing a country, or indeed any geographical area (cities etc.) http://www.mapcrunch.com Thanks
2011 · mapcrunch.com · its alternatives →
- 8
Hello! I built a map that generates a heatmap of the most convenient meeting spots between several people, based on public transit travel times. Move the markers anywhere in the map; all cities with sufficient transit data are supported!
Mar 2026 · commutometer.com · its alternatives →
- 9
Hey HN! I got nerd-sniped by Bloom Filters this weekend, specifically for searching datasets with high "cardinality" (number of unique items). They're an _amazing_ data structure that, at a fixed size, tracks potential set membership. That means unlike normal b-tree indexes, they don't grow with the number of unique items in the dataset. This makes them great for "needle in a haystack" search (logs, document) as implementations like VictoriaMetrics and Bing's BitFunnel show. I've used them in the past, but they've never been center-stage in my projects. I wanted high cardinality keyword…
2025 · github.com · its alternatives →
- 10
Cuckoo Filter implementation in Go, better than Bloom Filters (unmaintained) - irfansharif/cfilter
2016 · github.com · its alternatives →
- 11
Busity▲100Explore Paris 🇫🇷🥖 with the help of the public bus system
2017 · apps.apple.com · its alternatives →
- 12SH
Over the past week I built a project to let people self-host an entire maps stack so they don't have to send data to the big G. Right now it includes a base map, geocoder and directions server. Currently only bicycle directions are supported, and I'm only hosting tiles for Seattle because I'm unemployed and can't afford to host data for the whole planet. Check it out! https://maps.ellenhp.me/ https://github.com/ellenhp/headway Ultimately I'd like to really focus on transit routing (not implemented) but I'll probably throw a driving mode in there too.
2022 · maps.ellenhp.me · its alternatives →
- 13
Building a Bus Clock for my House using a Raspberry PI and Python. I won't miss the bus ever again!
2022 · purplehoisin.com · its alternatives →
- 14
As a side project I built Sydney Transit Graph - a visualisation of real-time Sydney bus congestion. Each line on the graph (a Marey chart) represents a bus completing its route (percentage) over time.
2022 · jakecoppinger.com · its alternatives →
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Explore the Berlin subway system using Memgraph Lab, mapping subway stops as nodes and connections as edges in a graph database.
2023 · memgraph.com · its alternatives →
- 19FT
Find the fastest route via any kind of business, or find places/POIs along your route. E.g. what
2013 · road.li · its alternatives →
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Terrapattern▲77A visual search tool for satellite imagery
2016 · terrapattern.com · its alternatives →
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Transit▲123Real-time transit data and a bot to help you commute
2016 · transitapp.com · its alternatives →
- 24
I've been tracking public transport data in NZ for a couple of years now, and have now built a site for its display. Public transport is quite a contentious issue here; what's better than to inform decisions with data? I’m posting this to ask some switched on people what the best step going forward for would be for this project. If someone was building a similar site for your city, what would you want to see? https://github.com/allister-grange/missinglink
2023 · missinglink.link · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →