Several things can happen. Depending on how severe the truck accident is, the laws and regulations in place, and the circumstances of the incident, many things can happen, including:
Emergency response - If the accident is catastrophic, the truck driver will most likely need medical attention, so emergency services like an ambulance and police will be brought to the scene.
Investigation - Police will usually investigate the scene to determine the cause and any potential contributing factors, like weather and road conditions as well as any mechanical issues with the truck.
Insurance claims - The truck driver’s insurance company will most likely be contacted about the accident, and may also be responsible for paying claims related to the accident.
Legal Action - Depending on the severity of the accident, there can be legal proceedings such as a truck accident claim or even wrongful death claim.
And more