Monday 26 May at 17:54 : F1's unpopular current safety car rules are not likely to be changed in time for the forthcoming Canadian grand prix.

That is the suspicion of Australian driver and GPDA director Mark Webber, who said he has heard that a few teams are preventing the required unanimity for a rule change to be put in place.

Several discussions about changing the rules have already taken place over the past few weeks, because the fact the pitlane is closed upon deployment of the safety car can unfairly penalise drivers who need to stop for fuel.

"As far as I know, a solution is being worked on," Webber, who races for Red Bull, said at Monaco.

"But there needs to be unanimity and I have heard that some teams want to keep the current rules.

"I don't know who it is, but I hope they will change their minds," he added.