Which event does NOT lead to mandatory revocation of a driver's license?

Answer: B — Conviction of speeding

A conviction for speeding does not lead to the mandatory revocation of a driver's license in North Carolina. While speeding can result in penalties such as fines and points on a driving record, it is generally treated as a less severe offense compared to actions that directly endanger life and safety, such as assault by motor vehicle, perjury in a driving-related case, or failing to stop and render aid after an accident. In contrast, events like a conviction for perjury in a driving-related case indicate a serious breach of trust and legal responsibility that can lead to mandatory license revocation. Similarly, assault by motor vehicle is a criminal offense that poses a direct threat to public safety, warranting severe consequences, including revocation. Failing to stop and render aid after being involved in an accident is viewed as a serious violation of the law and showcases a disregard for the well-being of others, which also results in mandatory revocation. Thus, while speeding should not be taken lightly, it does not trigger the same mandatory consequences as the other offenses listed.