What is the name of the reflective orange triangle with a red border used to indicate slow-moving vehicles?

The reflective orange triangle with a red border used to indicate slow-moving vehicles is officially referred to as the "Slow Moving Vehicle Emblem." This particular designation is significant in various jurisdictions, as it conveys important safety information to drivers about vehicles that are traveling at reduced speeds, typically 25 miles per hour or less.

The design of the emblem ensures high visibility, making it easier for other road users to recognize the presence of slow-moving vehicles, which can include agricultural machinery, certain types of construction vehicles, and other vehicles that may not be able to keep pace with normal traffic flow. This enhances road safety by helping to prevent accidents caused by sudden encounters with slow-moving vehicles.

The other options, while they may sound plausible, do not specifically refer to this standard emblem and may describe different types of warning or informational signage. For instance, "Caution triangle" and "Emergency sign" could imply other forms of warning signals that do not specifically denote slow-moving vehicles, while "Safety indicator" is a more generic term that lacks the specificity of the official emblem's purpose and design.