Lohan was rushed to the hospital after colliding into the back of the man's 18-wheeler truck on Friday (June 8).
Now the driver, who has given his name as James, is refuting earlier reports that he "cut her off".
He told TMZ that several witnesses can attest to the fact that he was already in the right lane of the road when Lohan crashed into him.
According to James, the Mean Girls star was "flying" down the highway just before the collision.
It was earlier reported that when he tried to exchange insurance information with the star, her handlers allegedly attempted to bribe him.
The 25-year-old actress is currently filming an Elizabeth Taylor biopic called Liz & Dick in LA. She has yet to publicly respond to the truck driver's allegations.