NHTSA Complaint #11501821 — 2020 FREIGHTLINER SPRINTER 2500

Driving in center lane of three lane interstate highway in the evening so it was dark. I had cruise control set at 55 mph. Nothing to my right and at least 100 yards of nothing in front of me. A white sedan speeds by in the left lane staying entirely in their left lane. My vehicle slammed on the brakes for some unknown reason almost causing the vehicle behind me to collide with me. A red triangle appeared on dash display for 2 seconds or so (not long enough to know what the computer thought happened ). No explanation given. No messages in drive computer. Absolutely awful. This could have caused a major accident and it was all done by a computer with no explanation. I want a dealer to download the log from my car for 17:52-17:53 on 1/14/23 and issue a complete and detailed report. There’s a severe safety issue and it must be fixed.