Colorado CDL Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Get ready for the Colorado CDL Test with comprehensive quizzes and study materials. Our platform features multiple-choice questions and hints to prepare you effectively for your commercial driver's license exam.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

During what situation is it forbidden to have riders on board?

When conducting routine maintenance
When refueling the vehicle
When making brief stops
When checking tire pressure

The correct answer is: When refueling the vehicle

Having riders on board a commercial vehicle is forbidden when refueling the vehicle for safety reasons. During refueling, there is a heightened risk of fire or explosion due to the flammable nature of fuel vapors. If any issues arise, such as the possibility of fuel spills or ignition, having passengers in the vehicle could lead to severe injuries. In contrast, routine maintenance, making brief stops, and checking tire pressure typically do not pose the same immediate risks as refueling. While it is advisable to ensure safety during these activities, they generally allow for the presence of riders if precautions are followed. The prohibition during refueling is a standard safety measure to protect both the passengers and the driver.