This document discusses different types of traffic signs and signals used to regulate traffic and ensure safety. It describes warning signs that indicate potential hazards, priority signs that establish right-of-way, and prohibitory/restrictive signs banning certain maneuvers. It also covers mandatory signs that require specific traffic behavior, service signs providing information to drivers, and directional signs indicating locations and destinations. Proper use and placement of traffic signs and signals can help reduce accidents by clearly conveying important safety and navigation information to road users.