Final Answer:False. Guide signs on expressways are predominantly green and white, but they can also include other colors for specific information. The green and white color scheme is commonly used for directional information on highways.Explanation:Guide signs on expressways are predominantly green and white, but their color schemes can vary to convey specific information effectively. The green and white combination is a standard convention in many countries, denoting directional guidance on highways. Green is associated with safety and information, while white enhances visibility.However, the false statement acknowledges that not all guide signs are strictly green and white. Different colors are strategically employed to convey diverse information categories. For instance, blue signs are often used for services such as rest areas, hospitals, and gas stations. Brown is reserved for recreational and cultural interest signs, like parks and historical sites. Yellow signifies warning signs, alerting drivers to potential hazards ahead.Red is typically used for regulatory signs, indicating laws and regulations that drivers must adhere to. By using distinct colors, expressway signs aim to enhance visibility and quickly communicate critical information to drivers, contributing to road safety and efficient navigation. Therefore, while green and white dominate, the incorporation of other colors serves a crucial role in conveying a spectrum of information on expressways....

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