Weber-Fechner Law in road traffic flow

Weber-Fechner Law was verified in between distance-headway (f) and car speed (y). Nobody has ever noticed this fact, since the traditional idea in analyses of road traffic flow has neglected the viewpoint of driver's human factor. The present paper will show the Law existence by measurements of T(time-headway) and V for each pair of cars subsequently flowing on road (X = VT). All graphical relationships between measured values of X and V showed the formula of X = X₀ e^ßv with very high correlation factor that nearly equal to 1, which can definitely be said it obeys the Law.