What is F1 Halo, when it was introduced and how does it save lives?

The Halo prevents large objects and debris from entering the cockpit of a single-seat racing car, and is used in Formula One among other sports. After Zhou Guanyu said it saved his life, we explain why and when Halo was introduced, and how it works.

F1 British Grand Prix: What is halo and how does it save lives?

What is the Halo and how did it save Grosjean during his horrific F1 Bahrain GP crash? - Quora

What is Halo in F1? How device works and when it came in, as Zhou Guanyu says it saved him in British GP crash

What is 'halo' that saved F1 drivers life in that crash, and how does it work? - Quora

Halo' devices save drivers in two separate horror crashes in F1 and F2 at Silverstone

Five years since the FIA was pilloried for introducing halo, it keeps saving lives · RaceFans

What is the halo? F1 cockpit system explained and why drivers are criticising it

Why do F1 cars have a halo? - Quora

4 F1 drivers whose lives were saved by the halo ft. Lewis Hamilton

History of safety devices in Formula 1: The halo, barriers & more