There is growing interest in the notion that a significant component of the heterogeneity retrieved in random … coefficients models may actually relate to variations in absolute sensitivities, a phenomenon referred to as scale heterogeneity …. As a result, a number of authors have tried to explicitly model such scale heterogeneity, which is shared across …

unobserved heterogeneity across the population. Effective sidewalk width, traffic signals, segment length, road functional class …