JJ Keller Entry Level Driver Training CDL Practice Test 2025 – Comprehensive All-in-One Guide to Exam Success!

Cruise control can be safely utilized in a commercial motor vehicle (CMV) under ideal conditions. Ideal conditions refer to clear weather, good visibility, and light traffic, where the driver can maintain full control of the vehicle and react promptly to any changes in traffic or road conditions. Using cruise control under such circumstances allows for more relaxed driving over long distances without compromising safety.

In contrast, using cruise control in wet or slippery conditions can lead to a loss of traction, making it difficult to control the vehicle effectively. Similarly, activating cruise control while driving downhill can pose risks, as it may cause the vehicle to accelerate more than intended due to gravity. Lastly, employing cruise control in all types of weather conditions disregards the fundamental rules of safe driving, which require constant attention to the road and the ability to respond to any hazards swiftly.