Sucheep Polpitak, 51,told police he was speeding at the time of the incident and did not see the car that had broken down on the roadside around 3am.
He claimed he fled the scene for fear of being assaulted by bystanders who had gathered at the scene.
Kiattisak Surin, 28, was killed and the owner of the car, Pannicha Khanpachai, 35, sustained a broken leg.
Sucheep has been charged with reckless driving causing death and injury.