If you're involved in a car crash, after dialing 911, take pictures of the vehicles involved before moving the vehicles, but only if it is safe to do so.
Even if the other party gets the ticket, this will not be admissible in a civil trial to determine who was at fault for the accident as this would be considered hearsay. Therefore it is important to document and preserve the scene of the accident through photos, obtaining dash cam videos of the accident, and obtaining potential video from surrounding security cameras (if any).