Regulatory signs are important traffic signs that inform drivers of the laws and regulations they must follow on the road. These signs help maintain safety and order by indicating speed limits, parking restrictions, and other rules. Common examples include stop signs, yield signs, and speed limit signs. These signs are usually rectangular or square and often feature red, white, or black colors to convey their messages clearly. Understanding and obeying regulatory signs is crucial for all road users, as they help prevent accidents and ensure smooth traffic flow.