What image is shown on the HILL sign?

The HILL sign typically depicts a truck going down a slope, which reflects a warning to drivers that they are approaching a hill or a steep grade. This is an important safety indicator, as it alerts drivers to the potential for losing control of their vehicles due to the incline, especially for larger vehicles like trucks that may require additional braking distance. The visual representation of a truck descending emphasizes the need for caution in these areas, ensuring that drivers prepare accordingly for changes in the road's elevation. This understanding is crucial for both safety and compliance with traffic regulations.