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Traffic warning signs are a type of road traffic sign used to inform drivers or pedestrians of dangers ahead on the road. Warning signs have a yellow background, black border, and black symbols, with an equilateral triangle shape and the apex pointing upward. The function of traffic signs: Road traffic signs use text and graphic symbols to convey instructions, directions, warnings, prohibitions, and other signals to vehicles and pedestrians. They regulate traffic flow and guide traffic. Depending on road conditions, they can implement one-way traffic, timed traffic, restrictions on certain vehicles, etc., playing a role in regulating, guiding, and controlling the flow and direction of various vehicles. They can improve road efficiency. They indicate road conditions, warning people of dangers in specific areas, allowing them to prepare mentally in advance to prevent traffic accidents. They provide direction, clearly indicating destinations, directions of intersecting roads, and the locations and distances of scenic spots along the way. They standardize traffic behavior.

Traffic signs:

1. Warning signs: Signs that alert vehicles and pedestrians to dangerous locations ahead on the road;

2. Prohibition signs: Signs that prohibit or restrict certain traffic behaviors of vehicles and pedestrians;

3.指示 signs: Signs that指示 vehicles and pedestrians on how to proceed;

4. Guide signs: Signs that convey information about road direction, location, and distance;

5. Tourist area signs: Signs that provide direction and distance to tourist attractions;

6. Road construction safety signs: Signs that notify traffic about road construction zones;

7. Speed limit signs: Signs that warn vehicles to reduce speed;

8. Auxiliary signs: Signs attached below main signs to provide additional explanation. There are mainly three types: circular for prohibition signs (including lifting of restrictions), white background with red border (black border for lifting restrictions); triangular for warning signs, yellow background with black border; rectangular for指示 signs, blue or green background with white border.