When it comes to pushing your car as hard as it will go and trying to go faster than others, crashes will happen. It’s why the rules are very strict on car and driver safety gear, as well as on-track procedures during the event.
When a crash or incident happens, corner workers will use flags to signal to other drivers what has happened and how they should react. For the driver who has had the incident, every event has emergency services including ambulances and fire-fighters on site to respond to the incident. Drivers learn what to do during these situations at their drivers schools and introductory events.
After an incident, the drivers involved will often be counseled by the officials and have opportunities to lodge complaints (called protests) against drivers if they feel there needs to be further review or action taken by those officials.