The first part of this paper includes a summary of the most relevant studies on the relationship between accidents and
indicators of tire-pavement traction. The results of this research are the basis for the design standards in various Countries in
the world for the management of road surface and for defining threshold levels of skid resistance.
The second part of this work proposes a review of levels of skid resistance for an existing road and introduces a relationship
between the SFC (Sideway-Force Coefficient) parameter and road geometry (radius of curves, superelevation, design speed),
and, consequently, with the demand of traction.
