Complex sentence: Under the system, driving offences would carry a pre-determined points value based on their severity that would be tallied up over the course of a season, with a driver receiving a race ban after accumulating twelve penalty points.
Split into simpler sentences: Under the system, driving offences will carry a pre-determined points value based on their severity. These points will be tallied up over the course of a season, with a driver receiving a race ban after accumulating twelve penalty points.