Formula Start Reaction Test
Lights-out style visual reaction timing with a five-light start sequence. Unofficial timing aid — not affiliated with any racing series.
Tests run locally in your browser. We do not upload keystrokes, pointer paths, or media.
Important
- Results include human, display, browser, and input latency — not pure hardware delay or driver certification.
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Results
- Last
- —
- Average
- —
- Median
- —
- Best
- —
- Worst
- —
- False starts
- 0
- Local best avg
- —
- Progress
- 0/5
No local history yet.
How to use
- Click Start. Five red lights illuminate in sequence.
- After a random hold, lights go out together.
- Respond with click/tap/Space only after lights out.
- Complete five valid attempts. Early responses are false starts.
- Optionally save a local DeviceMetrik share card (no upload).
What the result means
- Timing starts after the lights-out frame is confirmed with requestAnimationFrame.
- Average/median/best/worst summarize five valid trials.
- False starts count attempts before lights out.
Limitations
- Includes human, display, browser, and input chain latency.
- Not pure mouse/keyboard hardware delay.
- Not a racing-driver certification and not affiliated with any series.
- No Formula 1 logos, team marks, or official assets are used.
Troubleshooting
- False starts keep triggering
- Wait until all five lights extinguish before responding.
- Run aborts mid-sequence
- Keep the tab focused; blur/hide interrupts the attempt.
Related tools
Reaction Time Test
Measure visual reaction time with five valid attempts, false-start detection, and local history. Results include your full input and display chain.
Keyboard Tester
Press keys to verify browser keydown and keyup events across Windows, Mac, compact, and full-size layouts.
Mouse Test
Check mouse buttons, hold stability, movement path, and basic wheel events using the browser Pointer Events API.
FAQ
Is this an official F1 test?
No. It is an unofficial lights-out style reaction tool using DeviceMetrik branding only.