Design, validation and analysis of the reliability of a visual inspection tool for assessing tire wear. Case study

The lack of instruments and technical requirements in the processes of collection and dumping of solid waste is a serious social problem. In this context, the systematic assessment of collection trucks is an essential factor. The results of the design, validation and analysis of the reliability of a tire wear inspection instrument for waste collection trucks are presented. To evaluate content validity, the Delphy method was applied and the agreement between experts was assessed using the Kendall coefficient. The factorial analysis by main components was carried out in order to evaluate the construct validity.