When you're in a car accident in Texas, one of the main things that law enforcement needs to worry about is the preservation of evidence. You should be concerned about that, too, because without it, it can be hard to prove who is at fault for your accident.
When you work with a legal team and the authorities, evidence will be preserved to the best standard possible. Your vehicle and the vehicle of the other party may be kept as evidence of the accident, and photos should be taken. Videotaping of the scene and injuries are also vital, as this can be used in court to prove the severity of your injuries and the cause of the accident.