Was Donald Turnupseed at fault when he and James Dean collided? If so, did he get a ticket?

Turnupseed was a 23 year old college student at Cal Poly State University when driving eastbound on Route 466 (later renamed Route 46) when attempting to make a left turn onto Route 41, when he collided with Dean's Porsche traveling in the opposite direction, killing him instantly. There was never an official finding of fault in the crash, however standard driving procedure would indicate that Turnupseed was at fault since he made the left in front of Dean. However Dean's excessive speed (up to 150 MPH) on this isolated road, with the sun in his eyes (the crash happened around sunset time, with Dean driving west and sun sets in the west) are also contributing factors.

https://www.findagrave.com/memorial/10990655/donald-gene-turnupseed
https://www.wikitree.com/wiki/Dean-2516
https://www.hagerty.com/media/automotive-history/the-haunting-story-of-james-deans-little-bastard/

Contrary to reports of Dean's speeding, which persisted decades after his death, Nelson said "the wreckage and the position of Dean's body indicated his speed was more like 55 mph (89 km/h)." Turnupseed received a gashed forehead and bruised nose and was not cited by police for the accident. He was interviewed by the Tulare Advance-Register newspaper immediately following the crash, saying that he had not seen Dean's car approaching, but after that, refused to ever again speak publicly about the accident. He went on to own and operate an electrical contracting business and died of lung cancer in 1995.

https://en.wikipedia.org/wiki/James_Dean#Death