What does this sign mean?

• The vehicle is carrying an extra-wide load.
• The vehicle is long. Expect wide turns and extended length.
  Explanation:

  "This sign warns drivers that the vehicle is exceptionally long, such as a truck with a double trailer, and may require extra space for turning, merging, or stopping. It alerts other road users to maintain a safe distance and exercise caution when passing or overtaking."
• The vehicle is transporting hazardous materials.
• The vehicle cannot exceed a specific speed limit.