What is the usual maximum driving time for a commercial driver before mandatory rest?

In Missouri, as well as federally, the maximum driving time for a commercial driver before they must take a mandatory rest period is 11 hours. This is consistent with the rules set by the Federal Motor Carrier Safety Administration (FMCSA), which dictates that a driver is allowed to drive for a maximum of 11 hours after having been off duty for at least 10 consecutive hours.

This regulation is crucial for ensuring that drivers are not fatigued while operating a commercial vehicle, thereby promoting safety on the roads. The time drivers spend behind the wheel is strictly regulated to prevent accidents due to tiredness, making it important for commercial drivers to manage their hours effectively.

The other options reflect time durations that are either lower than the legal limit or are not in line with the regulatory framework designed to ensure safety for both the driver and the public. Therefore, 11 hours stands as the correct maximum driving time before a mandatory rest period is required.