What shape are guide signs generally?

Guide signs are generally rectangular in shape, primarily because this design allows for the effective presentation of information to drivers. The rectangular shape facilitates a clear layout where text and symbols can be displayed in a straightforward manner, making it easier for motorists to quickly understand directions, distances, or other important information.

Additionally, the uniform design helps maintain consistency across different types of guide signs, aiding in recognition and comprehension by drivers regardless of where they are. Other shapes, such as diamond, round, or octagonal, are used for specific purposes in traffic control, but rectangular signs are specifically intended for guiding and informing drivers on routes, making them the standard choice for guide signs.