Nico Rosberg has expressed his backing for the introduction of the halo protection system that was used for the first time by Ferrari's Kimi Raikkonen on Thursday.
In the third day of final Formula One testing in Barcelona, Raikkonen used the halo - a carbon structure designed to protect the driver's head - on his installation lap.
The idea behind the halo is to prevent pieces of debris striking drivers on the head - as happened to Felipe Massa at the Hungarian Grand Prix weekend in 2009, when he was hit by a suspension spring that caused him to undergo surgery and miss the remainder of the season.
The innovation has caused debate, with some suggesting it could hinder a driver's vision, but Rosberg has given the idea his backing.
"My opinion is it really is a massive step in safety because of the fatalities we've had in racing in the last years," said the Mercedes man.
"This would have saved those people, so it's a huge step, definitely needed.
"OK, visually, you can say it's not quite as good as now, but from some angles, like from the front of Kimi's car, it looked very cool actually. I'm all for it."
As well as being the first man to try the halo protector, Raikkonen enjoyed a productive day on the track by recording the fastest lap on Thursday, of one minute and 22.765 seconds, while Toro Rosso's Max Verstappen clocked up the most miles, completing 159 laps.