When a rear-end auto accident occurs, it is no different from any other accident, in terms of laws and regulations. Whoever caused the accident will be held legally liable. Most people believe that the rear driver is always at fault, but this is not true. In some cases, the lead vehicle may have braked abruptly or failed to signal, for example. Even if the rear driver is ticketed for following too closely, further investigation could reveal that the lead driver was more at-fault.