FIA makes further changes to F1 regulations

The FIA has introduced additional F1 safety measures for wet-weather racing ahead of this weekend's Miami Grand Prix, with the most significant change being a complete ban on boost mode usage during rainy conditions.

Drivers will no longer be permitted to deploy the boost button, which provides up to 350kW of additional power, when racing in low-grip conditions.

The governing motorsport body has implemented this restriction following concerns raised by drivers about the aggressive torque characteristics of current hybrid power units in wet weather.

This specific change has emerged as part of the swathe of rules updates brought about by the FIA's April meetings with F1 and its teams, with the alterations having now been approved by the World Motor Sport Council.

The new technical regulation states that boost mode "will be inhibited and is not allowed" during such conditions, meaning overtaking will rely solely on pre-programmed engine maps rather than the power differential that boost mode typically provides in dry conditions.

Further restrictions have been placed on the Driver Adjustable Bodywork system, commonly known as active aerodynamics. The revised regulations permit only "partial activation" of the straightline mode in designated low-grip zones, limiting teams' ability to reduce drag for overtaking in wet conditions.

These measures complement previously announced changes, including increased tyre blanket temperatures for intermediate compounds and modified battery deployment curves to improve initial grip and vehicle control.

The timing proves particularly relevant given Miami's weather forecast, which indicates a good chance of rain for Sunday's race. Tropical conditions and rising humidity levels are expected to generate inland showers that could move towards the coast, potentially affecting the Hard Rock Stadium circuit.

Miami's strict lightning protocols add another layer of complexity, with local regulations requiring immediate suspension of outdoor activities when thunder or lightning is detected. Last year, similar weather threats prompted the FIA to warn teams that any lightning strikes during the race would trigger an immediate red flag.

The regulatory changes represent the FIA's ongoing efforts to balance competitive racing with driver safety in challenging weather conditions.