True or False: Single and extension ladders can be used by more than one person at a time.

Using single and extension ladders safely requires adhering to specific safety practices, including the appropriate number of users. These types of ladders are designed for one person at a time to ensure stability and safety. When more than one person uses a ladder simultaneously, the risk of losing balance, increasing weight beyond the manufacturer's specified limit, and causing the ladder to tip over increases significantly.

Having only one person on the ladder allows for better control and focus on maintaining three points of contact while working. This practice minimizes the risk of accidents, which can result from shifts in weight or unexpected movements that may occur when multiple individuals are on the ladder. Therefore, it is crucial to follow this guideline to ensure workplace safety and compliance with ladder use regulations.