Under Louisiana law, the doctrine of sudden emergency is a defense available to a defendant who is confronted with a sudden and unexpected situation of danger and who responds as a reasonably prudent person would under the circumstances. The doctrine serves to limit the defendant’s liability even if it is later determined that he did not chose the ideal course of action in response to the sudden danger.
The Court of Appeal has expressed:
it is the settled jurisprudence of this state that a person is not obligated to exercise the same degree of care or judgment as is required under ordinary circumstances… A mistake of judgment or failure to adopt the best or wisest course for avoiding injury does not necessarily result in a finding of negligence. To contend otherwise is to attempt to exact hindsight instead of foresight from a motorist faced with a sudden emergency (Fouche v. St. Paul Fire & Marine Ins. Co., 153 So.2d 180 (La. App. 2d Cir. 1963).