Who was right and who was wrong in this traffic crash?

The following is an accident that really happened and here are the particulars. Vehicle number one was going straight ahead. Vehicle number two was leaving the exit lane of McDonlads restaurant, to make a right turn onto the public highway. Vehicle number one attempted to avoid a collision with Vehicle number two by swerving to the left and hitting two other vehicles. Driver of Vehicle number one stated he had the right a way, so….........Question: who was at-fault in this accident and did the other two vehicles involved, play a major or minor part in this accident?