Three-time Formula 1 World Champion Jackie Stewart says Formula 1 cannot afford to relax over safety following the accident in which Dan Wheldon was killed.
Stewart believes Wheldon's crash showed the interlocking of wheels remains one of open-wheel racing's biggest problems, as also shown by Mark Webber's accident during last year's race at Valencia, where the Australian ran into the back of Heikki Kovalainen's Lotus and took off. The Scot reckons Formula 1 should look at the issue "very seriously" in order to avoid more tragedies.
"I think the fact that it is actually two weeks since that accident, may have just allowed the steam to settle," said Stewart in India ahead of the country's inaugural grand prix. "There isn't the absolute reaction that there would have been had there been racing the next day, but nevertheless they have to look at it very seriously because it could happen at any time.
"The interlocking wheel situation is the biggest issue, so if we can find something that doesn't look too soft, in the sense of taking away the opportunity of the front left getting between the right front and rear of the car that is beside you – that is where the problem lies.
"If there is something like they do in karting for the inexperienced drivers, the kids – and to be frank with you, we have seen more collisions and coming-together in F1 in the last two years than I have seen probably ever.
"It is not just Webber's accident, I am thinking of. It is the situation we have seen, the collisions we have seen. It means people are taking things for granted. In our days we would never have collisions because the dynamics of the accident were so consistently obvious that everybody says you cannot do that.
"Now they are doing it and getting off with it, so they think it is OK to take that chance. That might wake them up. It is a huge risk, if you start getting close to another car and he moves over then it can be the kiss of death."
Stewart, who led a big push to improve safety as a driver, also believes Wheldon's accident will have focused the attention of many drivers about the actual dangers of racing with open-wheel cars.
"It will have opened their eyes that so many cars got into the air, and because of the speed, even though we have a fantastic fuel cell now, the explosion and the fire caused there – not just with one car – the force, the impact, the vapor was exploding – it can happen to everybody.
"So I think everyone has to stop the bus, and have a real careful look about what comes next and they need to have experts on it – from the sport as well as outside the sport. It was an aircraft accident."
He added: "The interlocking wheel situation we have, it is beginning to get to F1. There are too many drivers kissing wheels, and thinking that is OK, it is no big deal. Well, it is a big deal, because you only need to be inches wrong, and the interlocking wheels can be like a gear because one wheel is going one way, the right-hand wheel is going the other. Incidents like we saw with Mark Webber in Valencia last year, it only takes one wheel to come off and hit a driver's head, like happened to Henry Surtees [in Formula 2].
"He was nothing to do with the original accident, he wasn't involved, but the debris is traveling at such speed, and it is only when you think of something like that and the freak accident, and there are one or two deaths that frankly anything is done about it, so we have to look at it very careful and not just say, 'Oh well, with the law of averages we are due to have a big accident.' It really has to be really well analyzed in terms of what we do next."
Stewart thinks drivers should have more input into safety decisions, since it is them putting their lives at risk.
"I still believe that the drivers should have a bigger say with regard to safety with the governing body – the drivers are the ones out there, and one time I know several of the officials said, 'They don't know anything about the science or dynamics and we do, we measure it,' and so forth. But, at the end of the day, the driver is behind the wheel and he knows how far the car will go, when it starts to get in the air. They have been there, and whether it comes down in a barrier or over the barrier is just the luck of the draw."