The use of the Halo cockpit head protection system was possibly the largest improvement in F1 driver safety.

Some individuals, such as Lewis Hamilton, Romain Grosjean, and Toto Wolff, opposed the halo's installation.

The halo has, however, since saved many lives in F1, F2, and F3.

The Mercedes F1 team was responsible for creating the halo's rough initial design in 2015.

Cockpit head protection became required in the F1 competition in 2018, with the Australian Grand Prix serving as the first event to do so.

The aero screen and a shield were the two main opponents the halo faced.