GPS速度テスト
電車速度テストオンライン
スマホのGPSで電車がどれくらい速く走っているか確認できます。位置情報は開始後にだけ求めます。
How fast is this train?
Tap Start tracking and watch the speed build as the train pulls away. No apps, no account — just a live reading from your phone's GPS.
Compare to scheduled speed.
Cross-reference the live reading with the route's published average speed to see if the service is running on time.
Record your session peak.
The trip stats panel shows your session maximum — useful on high-speed routes where you want a record of the top reading.
Spot slowdowns at stations.
Speed drops as the train brakes into a stop and climbs again on departure. The live graph shows the pattern clearly.
Reading resumes after tunnels.
GPS drops to 0 underground where satellite signals can't reach. It recovers automatically when the train exits the tunnel.
Nothing to download.
Works on any modern phone browser. Share the link with travel companions so they can check their own speed too.
電車の速度をリアルタイムで見る
ZpeedはスマホのGPSを使い、電車の速度を km/h、mph、m/s で表示します。長距離列車、通勤電車、屋外区間の地下鉄、旅行中の確認に使えます。
最初のGPS測位を基準にして、その後に現在速度、最高速度、平均速度、経過時間、距離、GPS精度を表示します。
電車内でGPS精度を上げるには
窓の近くで使い、高精度の位置情報を有効にして、GPS信号が安定するまで数秒待ってください。トンネル、駅の屋根、高層ビル付近では更新が遅れることがあります。
便利な場面
高速列車、通勤電車、地下鉄、長距離移動、鉄道速度の確認に便利です。鉄道会社の公式計測ではありませんが、移動中のライブ速度確認に使えます。
Good to know
Things worth knowing.
01 Why does the speed show 0 in a tunnel? ⌄
GPS needs line of sight to satellites. Underground sections block the signal. The reading recovers automatically when the train exits the tunnel.
02 Does it work on any train? ⌄
Yes. Zpeed uses your phone's GPS, not the train's own systems. It works on intercity services, commuter lines, and high-speed rail as long as you have a GPS signal.
03 Does it need mobile data? ⌄
Only to load the page the first time. Once open, GPS speed calculation works with no data connection — or no SIM at all.
04 Will it drain my battery? ⌄
GPS uses more power than passive browsing. For journeys over two hours, a portable charger is handy. Adding Zpeed to your home screen as a PWA reduces browser overhead.