The crash was reported on westbound Highway 92 east of Half Moon Bay near Pilarcitos Creek Road about 1:15 p.m., CHP Officer James Evans said.
Following the crash, an overturned vehicle blocked the westbound lane, Evans said.
No one was injured in the crash.
One-way traffic was directed through the area during the investigation, causing backups in both directions, Evans said.
The cause of the crash was under investigation.