First, stay calm. Accidents happen to everyone. No matter how careful you are or how good of a driver you are, things happen. Second, make sure you safely get out of the car and observe the scene; take pictures; get the names of any witnesses and their contact info; get the other driver’s identifying and insurance policy information; and call the police. Do not leave the scene until the police arrives and makes a report. Also, call an attorney immediately to prevent damaging your case.