How many hours is the mandatory rest break established in 2013?

Answer: B — 30 minutes

The mandatory rest break established in 2013 requires a duration of 30 minutes. This regulation aims to enhance safety and compliance among commercial drivers by ensuring they take sufficient breaks during their driving hours. The rationale behind this rule is to combat fatigue, thereby reducing the risk of accidents on the road. The 30-minute rest break is part of a broader set of Hours of Service regulations enforced by the Federal Motor Carrier Safety Administration (FMCSA). These regulations are designed to prevent driver fatigue and ensure that commercial drivers have adequate time to rest, helping to maintain alertness and safety. Break durations shorter than 30 minutes, such as 15 minutes, do not meet the established requirement, while periods longer than 30 minutes are technically permissible but exceed the mandated minimum for a rest break during a work shift.