What GPS Speed Means
GPS speed is estimated from your phone's movement over time. When your device receives strong satellite signals, the speed reading can update quickly and smoothly.
Useful Trip Stats
Besides current speed, a train speedometer can show top speed, average speed, trip duration and estimated distance travelled during the session.
No App Download Needed
A browser-based speedometer is convenient because it opens instantly. You can use it on Android, iPhone and desktop browsers that support geolocation.
Best Conditions
GPS performs best near windows and on open routes. Underground sections, tunnels and dense station areas may temporarily reduce accuracy.