White or black signs generally convey what type of information?

White or black signs are typically used to convey regulatory information. This includes rules and regulations that drivers must follow, such as speed limits, lane usage, and other important regulations designed to ensure safety and compliance on the road. The use of these colors provides a clear visual cue that indicates to drivers that they need to adhere to specific laws or guidelines.

In contrast, warning signs usually use bright colors like yellow or orange to help alert drivers to potential hazards or changes in road conditions. Motorist services guidance signs, which provide information about services available to travelers, often use blue, while incident management signs might utilize various colors but generally do not fall under the white or black category.

Thus, the identification of white or black signs as regulatory signs underscores their purpose in maintaining order and safety on the roadways by communicating essential legal requirements to drivers.