B r a k e s
Among other things, the center-of-gravity height, the wheelbase and the empty-empty ratio of the vehicle are taken into consideration

What is this "empty-empty ratio"?

Question

B  r  a  k  e  s                   
Among other things, the center-of-gravity height, the wheelbase and the empty-empty ratio of the vehicle are taken into consideration

What is this "empty-empty ratio"?

Answer

I suppose it depends on if you are talking about a train car or an automobile.

Answer

I'm not sure, but I believe that the empty-empty ratio refers to the ratio of the car weight with passengers and fuel to the weight with the car when it is empty of both passengers and fuel.

Answer

I think it is the front and back seats have no passengers.  This is taken into account in the calculations/consideration.

Answer

Jargon such as this require technical knowledge. Auto design "101" may hold the answer.