What does “box box” mean in F1?
The radio call telling a driver to come into the pits this lap; "box" comes from the German for the pit garage.
"Box" is the instruction for a driver to enter the pit lane, and "box, box" is the doubled-up call teams use so it can't be mistaken over a noisy radio. The word comes from Boxenstopp, the German term for a pit stop, the garages being the "boxes". Teams say "box" rather than "pit" precisely because it sounds nothing like other radio words. When you hear "box this lap", the driver is being told to pit at the end of the current lap.
Related strategy & the pit stop terms
- The undercut — Pitting for fresh tyres before a rival, then using the grip advantage to jump ahead once they stop.
- The overcut — Staying out longer than a rival on older tyres, then using clear track to pit later and emerge ahead.
- Marbles — Bits of worn tyre rubber that collect off the racing line and are very slippery to drive over.
- Out-lap and in-lap — The out-lap is the lap leaving the pits on fresh tyres; the in-lap is the lap driven into the pits before a stop.
- Pit window — The range of laps in which stopping makes strategic sense given tyre life and the cars nearby.
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Definition written in plain language from the current F1 sporting rules and common usage, current as of 14 August 2026. Unofficial; not affiliated with Formula 1.