Authorisation and the Rider's Choice
When weather changes during a dry Grand Prix, Race Direction can wave the plain white flag from trackside marshal posts to permit flag-to-flag machine swaps. This signal indicates permission rather than an obligation; it leaves the decision to pit entirely up to each rider based on track feel, strategy, and tyre wear. If officials declare a race wet prior to the start, riders are automatically permitted to change bikes during the event without waiting for a white flag to appear. This plain signal must not be confused with the white flag carrying a diagonal red cross, which merely warns competitors that rain is actively falling on that track section.
Pit-Lane Protocols and Safety Requirements
Under the 2026 sporting regulations, exchanges must occur outside in pit lane rather than inside the garage. Following the MotoGP white flag bike change rules, teams are restricted to five helmeted crew members per rider in the pit lane to assist with the swap, with one designated mechanic focused exclusively on incoming traffic to ensure a safe release. Arriving motorcycles must pull into their pre-designated positions, and outgoing riders are required to yield to any machines already travelling down pit lane. Tyre warmers, setup adjustments, and swaps across identical tyre compounds or between slicks and wets are all permitted once the window opens.
Starting Grid Exceptions
A separate regulatory exception covers riders who encounter a machine failure on the grid or right at the start of an uninterrupted grand prix. In that specific scenario, a rider may switch to their spare machine provided the replacement bike clears the timing line at pit exit before the race leader completes the opening lap. While standard bike-positioning markings do not apply because the rider did not ride the primary bike in from the circuit, all other crew limits and pit-exit safety protocols remain fully enforced.
Official reference: MotoGP’s bike-switching guide of 31 January 2025.
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