Why? Do the laws of physics change bcause your car is taking part in a road race or a rally race? The defining factor is usually the force of impact and where the car impacts the ground. For example, if the car lands hard on a wheel then it's not uncommon for the car to lose that wheel regardless of what type of race the car is in. It's less likely to roll a car on a road race and when cars in road races do roll it usually at high speed. The faster your going then the harder the impact, but there's no blanket rule of physics that if your driving in a touring car race and and every roll will end your race, you might slide off the track and the car could in theory dig in, roll softly and land on it's wheels and be okay to drive off. Likewise in a rally race, your car could clip a verge at 80mph and barrel down the road and the race could be over. Each crash is unique, but the defining factor is the force of impact and where that impact damages the car, not if it's a rally or road race.
True, but I think the key factor is the speed of the crashes. It's rarer to see a car roll and continue in a road race for two reasons, firstly the safety rules often prevent a car from continuing after a roll and secondly because unlike a typical rally stage a race track is designed to be safe, there are no ditches, verges and such which make it easier to roll a car even at lower speeds. So typically a roll on a road track happens at a higher speed. But if the force of the roll for whatever reason isn't that great and a key component doesn't take the brunt of it, then a car can drive away from a roll on a road track. What you said isn't wrong, but the key factor is speed and where the force of impact is absorbed. I was just dissagreeing with your other post that you should continue in one form of racing but not in others, to me it should depend on the severity of the crash and not simply the type of race your are in.
