Chapter 5: Signs, Signals, and Road Markings

Recognizing and obeying traffic control devices is a non-negotiable part of driving. These signs, signals, and markings form a universal language that directs drivers, warns of hazards, and provides essential information, ensuring a safe and orderly flow of traffic. A driver’s ability to instantly understand and correctly respond to these devices is fundamental to passing the driver’s exam and is the cornerstone of defensive, accident-free driving.

Sign Colors and Shapes

The color and shape of a traffic sign provide the first and most important clues to its meaning, often allowing a driver to understand the message even before they can read the text. This system is designed for quick recognition from a distance.

Sign Shapes

• Octagon (8 sides) — Exclusively used for STOP signs.
• Triangle (downward-pointing) — Exclusively used for YIELD signs.
• Circle — Exclusively used for Railroad Advance Warning signs.
• Pentagon (5 sides) — Used for School Zone and School Crossing signs.
• Rectangle (vertical) — Generally used for Regulatory signs (e.g., Speed Limit).
• Rectangle (horizontal) — Generally used for Guide signs (e.g., directions, destinations).
• Diamond — Used for Warning signs, indicating potential hazards ahead (e.g., curve, slippery road).
• Pennant (sideways triangle) — Used for No Passing Zone warning signs, placed on the left side of the road.