Complex sentence: Dumas' car suffered a front-left brake disc failure, causing him to drive into the turn one barriers and damaged the front-end of his car, rendering him unable to take any further part in practice and triggering a full course yellow.
Split into simpler sentences: Dumas' car suffered a front-left brake disc failure, causing him to drive into the turn one barriers and damaged the front-end of his car. This rendered him unable to take any further part in practice and triggered a full course yellow.