A report from the Iowa State Patrol suggests the drivers of two semis might have been involved in some road rage Tuesday. The drivers exchanged words on a CB radio shortly before they crashed.

The report says 54-year-old Daniel Smoot of Atlanta, Missouri passed 61-year-old Stephen Greever of Red Oak, Iowa on Interstate 29. Smooth merged in front of Greever and hit the brakes.

The report says there was no vehicle in front of Smooth that would have caused him to slow down. Greever rear ended Smoot’s semi causing enough damage to disable his semi.

Both drivers refused medical transport.

Smoot was cited for failing to signal and rapid deceleration.

The incident was reported at 4:22pm in the southbound lanes of Interstate 29, milemarker 35, in Mills County, Iowa.

Smoot was operating his semi for Dickey Transport.

Greever was operating his semi for Sully Transport.