Four teams will run the Halo head protection system during practice for the Belgian Grand Prix this weekend, as the FIA pushes to have all the current drivers trial the Y-shaped device before the end of the season.
Although the governing body has abandoned plans to introduce the Halo next year – instead opting to introduce it in 2018 – it believes every driver should complete at least a lap to gain experience and to offer greater feedback before further development gets underway.
Therefore Nico Rosberg (Mercedes), Carlos Sainz (Toro Rosso), Nico Hulkenberg (Force India and Daniel Ricciardo (Red Bull) will have it fitted to their cars for an installation lap at least.
At present, only Sebastian Vettel and Kimi Raikkonen have trialled it as the device, although originally designed by Mercedes, was developed into a working prototype jointly by Ferrari and the FIA.
Sainz believes Spa offers the best test of the safety device as Eau Rouge's uphill approach has been a concern since it was first debuted during pre-season testing.
"It's the ideal track to try it out because it is where the visibility is tested," he said on Thursday. "Through Eau Rouge is where you need to feel if it is a compromise or not."
The Spaniard is also pleased that others have been given the opportunity to try it before its introduction.
"It feels like they [the FIA] have listened to us as after Germany – we said we should all give it a try and give our opinion on it and it is good three [other] drivers tomorrow are running it."
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