Issue with reported speeds

Bear19 days ago

I’m still having trouble with the speed display. The incoming JSON reports a speed of 31.9 m/s, but the server is showing 36.72 mph. I was actually going about 70 mph at the time. I'm on server version 6.7.3 using the docker image. Any idea whats going on here?
Thanks!

Anton Tananaev19 days ago

Server logs please.

Bear19 days ago
2025-06-24 13:33:21  INFO: [T8ab06b98] connected
2025-06-24 13:33:21  INFO: [T8ab06b98: osmand < 172.17.0.1] POST / HTTP/1.1\r\nHost: 192.168.10.10:5055\r\nUser-Agent: python-requests/2.32.4\r\nAccept-Encoding: gzip, deflate\r\nAccept: */*\r\nConnection: keep-alive\r\nContent-Length: 272\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\nid=1&lat=51.6*************&lon=0.40**************&timestamp=2025-06-24T12%3A33%3A21.000Z&odometer=297879.9&speed=31.91&heading=218.05&accuracy=2&altitude=49.21&Moving=Yes&Activity=in_vehicle&Battery+Level=50%25&Battery+Charging=Yes&Speed+Limit=70+mph&Overpass+Source=local
2025-06-24 13:33:21  WARN: Position forwarding failed: 0 pending - HTTP code 404 - RuntimeException (PositionForwarderJson:80 < *:73 < ...)
2025-06-24 13:33:21  INFO: [T8ab06b98] id: 1, time: 2025-06-24 13:33:21, lat: 51.6****, lon: 0.40***, speed: 31.9, course: 218.1, accuracy: 2.0
2025-06-24 13:33:21  INFO: [T8ab06b98: osmand > 172.17.0.1] HTTP/1.1 200 OK\r\ncontent-length: 0\r\n\r\n
2025-06-24 13:33:21  INFO: [T8ab06b98] disconnected
Anton Tananaev19 days ago

I don't see a JSON.

Bear19 days ago

Ah sorry. Is this what you're looking for?

2025-06-24 16:29:32 INFO 172.17.0.1 - - [24/Jun/2025 16:29:32] "POST / HTTP/1.1" 200 -
2025-06-24 16:29:32 INFO request.data: b'{"location":{"timestamp":"2025-06-24T15:10:21.243Z","coords":{"latitude":51.6******,"longitude":0.33*****,"accuracy":3.6,"speed":13.52,"heading":272,"altitude":122.84},"is_moving":true,"odometer":132982.5,"battery":{"level":0.65,"is_charging":false},"activity":{"type":"in_vehicle"},"extras":{},"_":"&id=2&lat=51.6******&lon=0.33*****&timestamp=2025-06-24T15:10:21.243Z&"},"device_id":"2"}
Anton Tananaev19 days ago

This is not a standard Traccar log. If you want some help, please provide full and complete context.

Bear18 days ago

Where do I find the JSON's in the tracker-server.log files?