Police spokesman Richard French says Dakota Culkin was struck Tuesday night after she stepped into the street. She died a day later at a Los Angeles hospital after suffering massive head injuries.
French says there is no active criminal investigation.
Police say the driver stopped and tried to help the 29-year-old. Officers determined the motorist wasn't driving drunk and followed all laws.
Macaulay Culkin's spokeswoman, Michelle Bega, said it was a "terrible tragic accident" and the family had no further comment.
The 28-year-old actor starred in the "Home Alone" films.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.