Seek medical care first and foremost. Even if you feel generally intact and able to walk away, injuries associated with a car crash can get worse in the hours and days ahead. If you are able, try to collect all the information you can from people at the scene, including other drivers, passengers, eyewitnesses and anyone who arrived. The information you collect should include insurance policies, driver's license numbers and vehicle makes and models. Taking photographs of the scene can help tremendously as well, as can keeping copies of all police reports and medical records.