A motorist’s dash cam captured a major crash involving trucks that happened in Pittsburgh, Pennsylvania, on Tuesday.

The incident was caught on dash cam on Parkway West by motorist Brandan Silvius during his Tuesday morning commute.

In the clip, you can see that multiple vehicles in the right lane appear to brake. A white van veers to the shoulder to avoid hitting a black Cadillac that’s come to an almost complete stop in the right lane. A truck traveling in the right lane veers left to avoid hitting the Cadillac but winds up striking a semi truck in the left lane.

KDKA reports that the incident caused major traffic delays on Tuesday morning.

Check out the dash cam clip below.

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