In October 2014, F1 driver Jules Bianchi collided under a yellow flag with a recovery vehicle that had gone out to lift another car that had crashed.
He was put into a coma and died nine months later.
Since then, the rules for when tractors can go out on the track have changed.
So when a tractor appeared at the bank to recover Carlos Sainz's car, after a crash on the first lap of the Japanese GP, it was met with fierce criticism from the drivers.
This when the drivers themselves were still on the track and driving behind the safety car.
Pierre Gasly, who himself drove into an advertising sign, drove extra fast to catch up with the field - and then the accident was close.
Pictures show how he is decimetres from colliding with the tractor at over 200 km/h.
- What is this?
I can't understand, I could have died, screams Gasly on the radio.
The race was then red-flagged and during the long stoppage, several drivers criticized the FIA for allowing a dragster onto the track while the cars were still running.
"We lost a life in this situation a couple of years ago"
Mexican Sergio Perez wrote on Twitter during the break:
"How can we be clear enough that we never want to see a crane on the track.
We lost Jules (Bianchi) because of a mistake.
What happened today is totally unacceptable.
I hope this is the last time I see a crane on the track".
McLaren driver Lando Norris was also harsh in his criticism of the organisation.
"What the hell.
How could this happen!?
We lost a life in this situation a couple of years ago.
We risk our lives, especially in these conditions.
We want to drive.
But this... Unacceptable," he writes on Twitter.