Which of the following is NOT a duty of commercial driving?

Driving with no sleep for 24 hours is not a duty of commercial driving because it directly contradicts the safety standards and regulations set forth by the Federal Motor Carrier Safety Administration (FMCSA). Commercial drivers are required to maintain a high level of alertness and focus while on the road to ensure their safety and the safety of others. Sleep deprivation can severely impair a driver's ability to operate a vehicle safely, leading to decreased reaction times, impaired judgment, and increased risks of accidents.

The FMCSA emphasizes the importance of regulated hours of service, which mandate rest periods to prevent fatigue. Therefore, engaging in driving without adequate rest is not only irresponsible but also against the guidelines designed to uphold public safety and ensure that commercial drivers are fit to perform their duties. In contrast, tasks like coordinating through several gears, using mirrors effectively, and performing precision grips are all vital skills necessary for a commercial driver to operate their vehicle safely and efficiently.