close-up of a single road salt crystal on gritty asphalt with blurred city lights in the background

antiice asphalt blurred background chemical compound city lights cityscape closeup cold climate concrete surface crystal crystalline structure deicing material environmental impact evening ambiance freeze protection frost prevention granular texture gritty ground level view ice control light reflections macro maintenance melting agent night scene nighttime illumination pavement preservation pedestrian safety public infrastructure service road roadway sparkle treatment salt seasonal change selective slip sodium chloride street perspective roughness temperature drop traffic blur translucent urban environment vehicle traction weather conditions weatherproofing roads winter