Radiation fog has been found to pose a greater threat to drivers than advection fog.

Radiation fog is not as consistent and visibility may change suddenly.

Radiation fog is more localized and is generated by surface cooling in calm weather conditions.

A silver halide color photosensitive material exhibiting a high photosensitivity, an excellent granularity, a low humidity-dependence in photographing, and a favorable radiation fog resistance.

It is essentially radiation fog confined by local topography, and can last for several days in calm conditions.