Road-holding – also written as Roadholding and Road holding – (in French being called "tenue de route", in German "das Beibehalten der Spur"), is essentially determined by the ability of a vehicle to stay on the road and on a desired trajectory of motion, whatever the circumstances (in curves, on greasy, wet or low-grip ground, loaded or not, etc.) may be, but also by the degree of ease that a driver may sense in controlling it in an emergency situation. (Hereby, the laws of nature as a framework, including the gravitational field of the planet „Earth“ as well as the phenomenon of inertia, are tacitly assumed as given.)