What does a red triangle with an orange center signify on a vehicle?

A red triangle with an orange center is a warning signal indicating that a vehicle is moving slowly. This is particularly important for drivers to recognize because it alerts them to exercise caution when approaching, as the vehicle may be traveling below the normal speed limit. Such a symbol is commonly used on slow-moving vehicles, such as farm equipment or construction vehicles, which may pose hazards on the road due to their reduced speed.

While the other options may represent various situations drivers might encounter, they do not specifically align with the meaning of the red triangle with an orange center. Recognizing this symbol helps ensure safety on the roads by prompting drivers to be vigilant and prepared for a vehicle that is not operating at regular speed.