The primary function of road signs is to convey essential information and instructions to drivers. Road signs are critical for traffic safety and navigation, providing drivers with the necessary guidance to make informed decisions on the road. They communicate important information about traffic regulations, road conditions, hazards, directions, and other vital details that help prevent accidents and ensure the smooth flow of traffic.
While enhancing the aesthetic appeal of the road may be a benefit of well-designed signage, it is not their primary function. Additionally, road signs do much more than simply indicate speed limits; they cover a wide range of instructions, such as warning signs for hazards, regulatory signs for rules, and informative signs for directions. Lastly, serving as advertisements is not a function of standard road signs, as their purpose is rooted in traffic management rather than commercial promotion.