P1racenews AI automatic summary:
The latest edition of Formula 1’s rule book threw up some surprise late additions on the eve of the 2026 season – including a new ‘Rain Hazard’ element
The latest edition of Formula 1’s rule book introduced a new ‘Rain Hazard’ element before the 2026 season, approved by teams and the FIA but lacking detailed information initially. The Rain Hazard falls into the trend of certain regulations being discussed ‘off-book’, with specifics shared between the FIA and teams. If the Rain Hazard is declared, adjustments outlined in ‘FIA-F1-DOC080′ may be allowed if cars are in parc ferme at the time. Despite speculation that the Rain Hazard aimed at preventing teams from being locked into specific set-ups due to changing weather conditions, teams are still bound by qualifying rules under parc ferme regulations.
The Rain Hazard primarily addresses the complexities of the 2026 cars’ active aero components, particularly relating to ride heights required for different modes of operation. To prevent potential damage to the plank due to high downforce when in corner mode at high speeds, a new partial aero mode was agreed upon. This partial aero mode allows for adjustments in certain zones where the front wing can open up while the rear wing remains closed, lifting the front of the car and avoiding plank damage.
