Which color sign is used to indicate a general warning in traffic?

The use of yellow signs in traffic is standardized to indicate general warnings or caution. These signs alert drivers to potential hazards, changes in road conditions, or the need for reduced speed in a specific area. Examples of situations where yellow signs might be used include construction zones, sharp turns, or pedestrian crossings.

This color choice is effective because yellow is highly visible and often associated with caution, making it easy for drivers to recognize and react to potential dangers while on the road. The other color choices have different specific meanings, such as green indicating destinations and information, blue representing motorist services, and red signaling stop or prohibitive action.