Which statement about school bus speed laws is NOT true?

The statement that requires written authorization to exceed 55 mph is not true regarding school bus speed laws. Generally, school bus speed laws allow for adherence to established speed limits but can also reflect local regulations that might permit adjustments under certain conditions.

It is crucial for school bus drivers to strictly follow designated speed limits, especially since exceeding these speeds can increase the risk of accidents and jeopardize the safety of students. Conversely, the actual regulation around exceeding a specific speed limit such as 55 mph typically does not require written authorization; rather, it falls under general traffic rules and safety considerations that guide bus operations.

In contrast, the other statements provide valid insights into driving practices for school buses. For example, adjusting speed to traffic conditions in heavy situations is a necessary adjustment to practice safe driving. Additionally, maintaining a maximum speed of 45 mph in urban areas helps ensure the safety of students boarding and disembarking from the bus. Similarly, always adjusting speed according to road conditions is fundamental to maintaining vehicle control and safety in varying environments.