Can the key switch be activated or deactivated by the driver?

The correct answer is that the key switch can be activated or deactivated by the driver, but only during maintenance. This limitation is important for safety and operational integrity. It ensures that the key switch can be accessed during specific times when maintenance is being performed, allowing technicians or operators to modify settings without compromising safety during normal operation.

During regular operation, the key switch is often restricted to prevent accidental activation or deactivation, which could lead to hazardous situations or unintended equipment operations. By allowing the driver to activate the key switch only during maintenance, protocols are in place to maintain control and ensure that trained personnel are present during any changes that could affect system functionality.

This context also highlights the importance of having strict guidelines about who can interact with critical control systems to prevent unauthorized access and ensure operational safety.