CAJON PASS, Calif. (KABC) -- Another round of heavy fog rolled into the Cajon Pass Thursday morning, triggering warnings from authorities a day after a multi-car pileup in the same area injured at least 17 people.
MORE: At least 17 people injured in multi-vehicle crash on SB 15 Freeway in Cajon Pass
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Traffic seemed to be flowing normally for the most part Thursday, but authorities cautioned drivers about the reduced visibility on the roadway.
A warning was in place for commuters to avoid the area if possible, following the Wednesday pileup on the southbound 15 Freeway between Oak Hills and Highway 138.
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MORE: Mojave High School students get CHP escort to graduation ceremony after Cajon Pass pileup
The chain-reaction wreck involved 20 to 30 vehicles and caused a closure of the freeway for nearly two hours.