Colorado CDL Practice Test

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Prepare for the Colorado CDL Test with ease! Our engaging quizzes and study materials will help you master the knowledge needed for passing the CDL exam. Strengthen your understanding of Colorado driving laws and get ready for your new career on the road!

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.

What is the significance of a round black on yellow sign at a railroad crossing?

It provides information about nearby gas stations
It serves as an advance warning for the railroad crossing
It marks a pedestrian crossing only
It indicates the speed limit in the area

The correct answer is: It serves as an advance warning for the railroad crossing

A round black on yellow sign at a railroad crossing serves as an advance warning for the railroad crossing. This type of signage is specifically designed to alert drivers that they are approaching a railroad track where trains may be present. The round shape of the sign signifies a warning, a common practice in traffic control signage, and the yellow color indicates caution, thereby enhancing visibility and drawing attention to the potential hazard ahead. In this context, the advance warning is crucial for safety, allowing drivers to prepare to stop in case a train is coming. Drivers can then make informed decisions about whether to proceed or halt based on the upcoming crossing. Understanding this warning helps prevent accidents, as railroad crossings can be dangerous if proper caution is not taken.