Hot enough for drivers to wear a liquid-cooled vest, F1 rules for Austrian race (opens original article in a new tab)

Formula One declared a heat hazard for the Austrian Grand Prix, requiring cooling systems for drivers due to high temperatures, marking the first such designation this season.

• Formula One declared a heat hazard for the Austrian Grand Prix due to temperatures over 31°C
• Teams must install driver cooling systems like liquid-cooled vests or face a ballast penalty
• This is the first heat hazard designation this season and the eighth race of the championship
• The rule was introduced in 2025 and previously used at Singapore and US Grands Prix