Ask HN: What makes great real-time, turn-by-turn navigation software?

阿新 • • 發佈：2019-01-12

There are a handful of examples of open source, real-time, turn-by-turn navigation software out there. For example, https://github.com/valhalla/valhalla gives great turn-by-turn directions. I'm looking for best practices around navigation that will tell you to turn right in 300 feet as you're driving.

I'm curious about the high level, non-obvious gotchas in making them really useful to match current best offerings. Things like smoothing of gps (specific to the use case), better estimation techniques for current position/speed between gps updates, best practices around time estimation to next turn given current (estimated) position/speed, how best to determine when to reroute (how far is too far off route, how long to wait until rerouting), cheats people use to paper over bad data, etc.

Thanks!

Ask HN: What makes great real-time, turn-by-turn navigation software?

There are a handful of examples of open source, real-time, turn-by-turn navigation software out there. For example, https://github.com/valhalla/valhalla gi

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