The speed of the vehicle shall never exceed the safe speed set forth by the manufacturer or which may endanger the safe handling of the vehicle or safe operation of the arm as determined by the driver.
What does the bold part exactly mean? I asked the same question today: What does "as" mean in this context?
But if "as" is interpreted into "like", I'm not sure if "arm" is determined by the driver or "safe handling or safe operation" is determined by the driver. I think the latter makes sense, but I want to be sure. What is exactly determined by the driver in the sentence above?
Does the italic part mean that "if the safe speed is exceeded, safe handling of the vehicle or safe operation of the arm, which is determined by the driver, may be endangered"?