When must a CDL holder inform their employer about an alcohol or drug conviction?

Answer: B — Within 5 days

A commercial driver’s license (CDL) holder is required to inform their employer about an alcohol or drug conviction within 5 days. This regulation is vital because it ensures that employers are aware of any legal issues that may impact a driver's ability to operate commercial vehicles safely. The underlying principle is to maintain the safety of the driver, the public, and the integrity of the commercial driving profession. By mandating a five-day notification period, regulators aim to facilitate a prompt response from employers, allowing them to take necessary actions such as reviewing the driver's qualifications, providing additional training, or implementing disciplinary measures. This timeframe strikes a balance between the need for timely communication and allowing drivers a reasonable period to formally notify their employers of such serious matters.