Missouri is a "comparative fault state."  This means that a person can be partially responsible for their own injuries and still receive compensation.  The amount of the other persons responsiblity determines the amount of the other driver's responsibility.  For instance, assume that you had an accident at an intersection.  Another driver turned left while you were traveling straight.  You struck the other driver at the rear of his vehicle.  Even though the other driver turned in front of you, it could be argued by the other driver that you didn't do all you could to stop your vehicle or to avoid hitting his vehicle.  If your case went to a jury trial, the jury might find that the other driver was 75% at fault for the accident and you were 25% at fault.  Further, assume that the jury finds that your damages sustained in the accident were $60,000.00.  Because the other driver is found by the jury to be 75% at fault for your injuries and damages, then you would receive 75% of $60,000.00, or $45,000.00.