Romain Grosjean says he remains against additional cockpit protection coming into Formula 1, describing the Shield device as “as bad as the Halo” following its first public test.

Sebastian Vettel completed one lap at the start of FP1 at Silverstone with the Shield attached to his Ferrari, but he abandoned plans to complete further running with it because it made him feel dizzy.

Grosjean said the design looks no better than the Halo, which he didn’t like when he tried it in 2016.

“I’ve made myself clear since the beginning: we don’t need anything,” the Haas driver said at Silverstone on Friday. “Obviously the test was not very conclusive today.

“I’m against every Halo or shield or whatever, it’s not Formula 1.”

When asked if the shield was at least the best solution to appear so far, Grosjean added: “No, it’s as bad as the Halo.

“I tried the Halo last year, I hated it, it made me sick, so we haven’t yet found a good solution.”

Grosjean is now a director of the GPDA, having replaced Jenson Button earlier this year, and he said the matter of cockpit protection is no longer discussed by the drivers’ body.

“We are always pushing the safety element, but it’s not up to us to take the decision,” he said.

“The drivers are very divided [on cockpit safety]. We’ve actually stopped discussing it, because it’s safety related.