In August 2017 the Dallara F2 2018, a new Formula 2 car, was presented and was the first to install the halo system. The SRT05e Formula E car presented in January 2018 had a halo. In November 2018, the 2019 FIA Formula 3 car, which was unveiled in Abu Dhabi, installed the halo too. Beginning in 2021, the Indy Lights' IL-15 began using the halo.