What is the required height of the school bus sign?

The required height of the school bus sign is not less than 8 inches on the front and rear of the bus. This specific size ensures that the sign is highly visible to other drivers, especially in various light conditions or from a distance, which is critical for the safety of students boarding or exiting the bus. The visibility of the sign plays a significant role in alerting drivers to the presence of a school bus and the need to exercise caution, particularly in school zones or residential areas where children may be present.

The other heights mentioned, while they could provide visibility, do not meet the established guidelines set forth for school bus signage in Texas. The 8-inch requirement strikes a balance between visibility and practicality, ensuring that the sign is clear without being overly cumbersome.