![caltrans-logo.jpg](https://assets2.cbsnewsstatic.com/hub/i/r/2022/04/12/17c4e78f-6ada-4d4a-9f28-089b385c5c8e/thumbnail/640x360/47b6f8062f8f1f590dbf5c0cd70f01b5/caltrans-logo.jpg?v=d8f7565ef3e8b72561ee316b5993cbf9#)
Caltrans investigates after Mendocino County highway sign flashes racist message at drivers
Authorities in Mendocino County are investigating after a Caltrans electronic highway sign was tampered with so it displayed a virulently racist message to drivers over the weekend.