Final answer:
A slow moving vehicle (SMV) sign is a traffic sign that indicates to other drivers that the vehicle ahead is moving at a significantly slower speed than the normal flow of traffic.
Step-by-step explanation:
A slow moving vehicle (SMV) sign is a traffic sign that is used to indicate to other drivers that the vehicle ahead is moving at a significantly slower speed than the normal flow of traffic. This sign is typically a bright orange triangle with a reflective border and a pictogram of a slow-moving vehicle. It is usually displayed on the rear of vehicles such as tractors, farm equipment, and construction vehicles to warn other drivers to exercise caution when approaching or overtaking these vehicles.