Abstract: Provided is an information processing device including at least one processor, the at least one processor executing a first obtaining process for obtaining accessory equipment data transmitted from each of pieces of accessory equipment included in an accessory equipment group, a first converting process for converting the accessory equipment data, which has been obtained in the first obtaining process, into a particular format, and a first providing process for providing, to main equipment, the accessory equipment data whose format has been converted in the first converting process.

Abstract: A leveling device for an asphalt finisher or the like including a pair of screeds disposed at front and rear portions of the device on auxiliary frames which are slidably coupled to a main frame. The main frame is pivotably mounted to a pair of supporting arms extending from the vehicle body. The screeds are both movable laterally and tiltable sidewards so that a predetermined depth of asphalt coating can be attained and a crown portion provided if desired.