What does a magenta circle with "HS#" signify on a chart?

The magenta circle with "HS#" on a chart signifies a hot spot. Hot spots are areas on the airport surface where pilots need to exercise heightened vigilance due to potential conflict points, such as intersections of runways and taxiways, or other locations where the risk of an incident is elevated. The magenta color is used to draw attention to these important safety areas, helping pilots to stay aware of their surroundings and navigate safely, particularly in busy or complex airport environments.

In contrast, restricted airspace is typically depicted through various symbols and shading, while waypoints are indicated in a different format, often with specific names and symbols. Air traffic control zones are represented using boundaries and are not denoted by a simple magenta circle. Understanding the importance of recognizing these symbols helps enhance situational awareness for pilots operating in controlled environments.