Determining who is at fault in a car accident is crucial, but it can be difficult. Fault is proven by evidence, which can include photos of the accident, eyewitness testimony, and police reports. The order of the vehicles involved, the status of traffic lights or signs, driving laws, and the location of an accident could all play a role. This is why it is so important to act quickly after an accident, gather fresh information from eye witnesses, and reach out to resources that can provide factual information.