From the LAT:

Film director Robert Clark and his son Ariel were killed in an early morning collision along a stretch of Pacific Coast Highway in Pacific Palisades, authorities said.

Clark directed the classic holiday film A Christmas Story in 1983 and was also the producer of the Porkys films, along with about two dozen other features.

The crash, which occurred about 2:30 a.m., left the highway closed between Temescal Canyon Road and West Sunset Boulevard until 10:40 a.m., while police investigated at the scene, said Kevin Maiberger, a spokesman for the Los Angeles Police Department.