Final answer:
Drivers must know road sign characteristics such as shapes, colors, and symbols as they convey crucial information for safe driving.
Step-by-step explanation:
Drivers must be acquainted with several characteristics of road signs to navigate safely and effectively. These characteristics include not just the obvious such as symbols and signage, but also the shapes, colors, and symbols that carry specific meanings. For instance, a stop sign's distinctive octagonal shape and red color convey the need to halt, while green generally indicates permission to proceed. Awareness of these aspects aids in quick and correct interpretation of traffic rules and conditions, ensuring safe driving practices.