The image shows a yellow triangular warning sign with a black exclamation mark in the center. The sign is attached to a red pole and is located in front of a building with a corrugated metal roof. Below the sign, there is a white sign with black text and an illustration of a car and a motorcycle. The text on the sign reads "300 km/h" in both English and Thai. The sky is cloudy and there are some plants in the background.