The variation of road-surface temperatures in Devon, UK during cold and occluded front passage

Road-surface cooling during three contrasting frontal passages was examined for various rites with widely varying exposure across Devon. Delays in roa d cooling were dependent on exposure, topography, thermal inertia, precipit ation and surface wetness. Scattered cloud and cloud bands complicate the s patial variability, but for winter maintenance, worst-case scenarios of com plete cloud clearance produce important guidelines for prioritising salting routes.