
Yellow numbers indicate the maximum speed limit. 1. Speed limit: Speed limits usually refer to the maximum speed limit, generally used to prevent drivers from posing safety hazards due to speeding. 2. Minimum speed limit: On highways and expressways, there are also minimum speed limits. This is because vehicles normally travel at high speeds on highways and expressways, and if some vehicles travel too slowly, they can become moving obstacles on the road and easily lead to rear-end collisions. 3. Principle: The maximum speed limit on highways should balance safety, economy, and comfort while ensuring the operational efficiency of the highway.

I've been driving for over a decade and noticed that yellow road signs aren't speed limits but warnings of potential hazards like curves, pedestrian zones, or animal crossings, requiring you to slow down and observe based on the situation. True speed limit signs are distinctly different: maximum speed limits are circular with white background, red border, and black numbers indicating the speed you must not exceed; minimum speed limits on highways are circular with blue background and white numbers showing the lowest speed you must maintain. I've seen friends mistake yellow signs for speed limits and end up in accidents from driving too fast. Emphasizing that safety comes first—yellow is a reminder, not a rule. To clarify speed limit standards, I recommend checking official driving manuals or guide apps, not guessing based on colors.

I'm very interested in traffic regulations. Through research, I've learned that sign colors serve distinct purposes: yellow is used for warning signs, such as alerts for schools or construction zones ahead, indicating the need to slow down and proceed with caution, but without specifying a particular speed limit. The maximum speed limit is defined by the white sign with a red border setting the upper limit; minimum speed limits are only displayed on blue signs in specific road sections. A common misconception is that yellow signs represent speed limits, but they actually serve as hazard warnings. While driving, it's important to stay aware of your surroundings and not rely solely on color for judgment, as this can lead to mistakes. Remembering the rules is key to avoiding tickets.

When teaching my child to drive, I explained that yellow signs on the road don't indicate speed limits but warn of hazards, like 'Caution Children' signs, meaning you should slow down and stay alert without specifying maximum or minimum speeds. Standard speed limit signs have a white background with a red border showing the maximum value; blue signs on highways set the minimum speed. Don't confuse the colors—safe driving relies on understanding each sign's purpose. I recommend beginners start with basic rules, which are simple and easy to remember.


