The 24-year-old added: “In the future when there is a tractor coming up to
pick up the car, we need a safety car, in no matter what conditions.

“There is always a risk, even if it is dry, because you expose the marshals
and a lot of people. You can have people running out of brakes. There are so
many factors you never expect so if you have the tractor there it is a big
problem.”

It comes as Marussia face the decision of whether to run a second car in
Sunday’s inaugural Russian Grand Prix in Sochi, and who will be driving.

John Booth, the team principal, remains at the 25-year-old Frechman’s bedside
in Yokkaichi, Japan. Bianchi suffered a diffuse axonal injury at crashing
into a recovery tractor in last weekend’s rain-soaked Japanese Grand Prix.

The drivers have arrived in Sochi in a sombre mood, with the thoughts still
very much with Bianchi in Japan.

Jenson Button said: “It’s been an incredibly difficult couple of days since
Suzuka.”

“We’ve all been waiting to hear the news on Jules’ progress; he’s been
constantly in my thoughts. We all know that Formula One is dangerous, but it
takes something like this to really bring it home.

“I travel to Russia feeling sad, but with love and hope in my heart for Jules
and his family.

“Equally, I’ll be thinking of everybody at Marussia. It’s at times like these
that you realise just how much Formula One is one big family. We all live
and work for each other, and I hope they’ll all stay strong during this
difficult time.”