Final answer:
When a load obstructs an operator's vision, they should stop the vehicle immediately to ensure safety and then adjust the load or use alternative methods to see clearly before proceeding.
Step-by-step explanation:
If the load being carried obstructs vision, the operator should immediately stop the vehicle. This is critical for ensuring the safety of the operator and others around. The operator should then adjust the load or find an alternative method to see clearly, such as using spotters or mirrors, before proceeding. Continuing to drive, increasing speed, or ignoring the obstruction are all unsafe practices that could lead to accidents or injuries.