Provided is a structure that ensures passenger space in the event of vehicle roll over and minimizes protrusion of the roof side portion, which has highly efficient load absorption and distribution, into the vehicle cabin, without sacrificing vehicle cabin space or requiring deep drawing press molding for increasing the section modulus of the roof side portion. The system includes an exhaust collector for collecting exhaust emissions from the internal combustion engine of the towing vehicle and an exhaust distribution system for injecting at least a portion of the exhaust emissions collected by the exhaust collector into the ground worked by the ground working tools of the agricultural implement. The consumption behavior data includes a content accessplay data such as a normal finish, skimmed, skipped, slowed, or replay, and a stopped data of the content accessplay. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way. The present invention comprises a series of wireless acoustic sensors attached to the mill’s outer body, a receiving andor conditioning unit located near the mill, a processing unit and a communication unit. The open ends of the fibres are embedded in a base and provided in a compartment between the base and a liquid outlet.