Why must you follow posted signs when approaching a lock?

Following posted signs when approaching a lock is essential for ensuring safe navigation through the lock. These signs provide critical information about the operational status of the lock, indicate the proper protocol for entering and exiting, and outline any specific instructions related to the lock’s functionality, such as wait times or available services. By adhering to these signs, boaters can prevent accidents, maintain order, and effectively manage the flow of watercraft, ensuring that all vessels can navigate through the lock safely and without incident.

While avoiding collisions with other boats, adhering to traffic laws on the water, and determining the type of lock are all important aspects of boating safety, the most direct reason linked to posted signs is related to safety during the passage through the lock itself. Signs are specifically designed to enhance safety and functionality at critical points such as locks, where navigation can be complex and potentially hazardous without clear guidance.