This appeal involves a collision between three vehicles which had been traveling in the same direction. The defendant-appellant, driver of the leading vehicle, stopped in a lane of traffic governed by a continuous green traffic light, allegedly without giving adequate notice or warning. The plaintiff-appellee, driver of the second vehicle, saw the defendants brake lights come on and stopped short of her vehicle; however, she was struck from the rear by a third vehicle and shoved forward into the appellants vehicle. Neither the owner nor the driver of the third vehicle was a party at the trial of the action which resulted in a verdict for the plaintiff-appellee upon which the trial court entered judgment. We reject the defendant-appellants contentions that the court erred in refusing to direct a verdict in her favor on the issues of negligence, contributory negligence and proximate cause but reverse for a new trial because of several errors involving the admission of evidence and jury instructions.