Road geometrical design out of standards: a preliminary study in a simulated context

When a road design solution is quite out of standards for the presence insurmountable constraints, there need an objective procedure aimed at achieving certain level safety drivers. To avoid issues on judicial responsibility, designers aim to fully satisfy existing standards, possibly without any exception. Traditional methodologies based previous experience or administrators’ guidelines generally caused problems due high subjectivity involved in analysis. In this paper, overpass these issues, rational vehicles telemetry data simulated environment proposed. This process, through synthetic indices, allows analysts compare two geometries, similar but different, because one includes curves with shorter residual circular arcs than threshold values imposed by Italian standards. The main results, derived from two-way ANOVA subsequent contrast analysis, suggest that deviation respect did not determine decay driver’s performance. Compared literature, study, full was proposed, totally new indicator, which can be easily adapted context, involving driver, and vehicle same time.