Which of the following statements is true regarding drawbridges?

The statement about drawbridges being mechanical structures that raise or turn to allow marine traffic to pass under them is indeed accurate and reflects the primary function of drawbridges. These bridges are specifically designed to facilitate the movement of boats and ships, enabling safe passage over navigable waterways.

When the drawbridge begins to move, it is essential for safety reasons that the roadway is closed to all traffic. This ensures that vehicles and pedestrians do not attempt to cross as the bridge is in operation, significantly reducing the risk of accidents.

Furthermore, drawbridge signals serve a crucial purpose; they should be treated with the same level of caution and adherence as regular traffic control signals. This ensures that drivers are aware of the changing conditions and respond appropriately to avoid dangerous situations.

Collectively, these points highlight the importance of understanding the operational protocols and safety measures associated with drawbridges. All these statements being true confirms a comprehensive understanding of the rules and regulations surrounding the use of drawbridges in Florida.