UPDATE (6:04 p.m.) - The California Highway Patrol has identified the wrong-way driver as Ryan Johnson, 47, of San Luis Obispo.
He was arrested on suspicion of hit and run and driving under the influence, both felonies.
According to the CHP, drug use is believed to be a factor in this collision.
Investigators are asking anyone who witnessed the crash or who has further information about this incident to contact Officer Clissold at (805) 594-8700.
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ORIGINAL STORY: A crash on southbound Highway 101 slowed traffic through San Luis Obispo on Wednesday afternoon.
The three-vehicle crash, which involved a wrong-way driver, happened at about 3:45 p.m. near Broad Street.
According to the California Highway Patrol, the wrong-way driver was initially reported traveling northbound on the southbound shoulder.
After colliding with the other vehicles, CHP says the driver ran off but was taken into custody a short time later.
A total of four people were involved, including the male suspect, a female driver in a car, and two people in a pickup truck.
The woman was taken to the hospital with a leg injury. The people in the pickup did not complain of any injuries.
The California Highway Patrol is investigating the crash.
