Question

RULE, Before coupling cars, train operators must see that the brake is set up on the section to which coupling is to be made. When making coupling on grade, they must move cars upgrade: The principle safety feature realized by coupling upgrade is that the.

Answer 1

The principle safety feature of coupling on a grade is that train cars remain connected securely to prevent accidents and hazards.

Step-by-step explanation:

The principle safety feature realized by coupling upgrade is that the train cars remain connected. When making a coupling on a grade, the train operators move the cars upgrade to ensure that they are connected securely. This prevents any risk of the cars becoming uncoupled and rolling freely, which could cause accidents and hazards.