As far as I'm aware, in the mexican transport industry is a common practice to overload the trucks as much as possible. This is so widespread that any company

As far as I'm aware, in the mexican transport industry is a common practice to overload the trucks as much as possible. This is so widespread that any company which doesn't do it is likely less profitable than all the rest which do overload hence they have to overload to be competitive. I like to frame this in terms of an overruling pragmatism in mexican culture, as long as the truck still goes everything is just fine. I suppose overloaded trucks (under more stress) are louder.