Florida Injury Attorney Blawg
In 1958, Florida joined a small number of states in adopting a legal presumption of negligence against trailing drivers involved in rear-end motor vehicle collisions. This shift was established in McNulty v. Cusack, 104 So.2d 785 (Fla. 2d DCA 1958), and later endorsed by the Florida Supreme Court in Bellere v. Madsen, 114 So.2d 619 (Fla. 1959).
The Legal Rationale
The presumption is rooted in practical evidentiary concerns. Typically, plaintiffs bear the burden of proving all four elements of negligence: duty, breach, causation, and damages. But in rear-end crashes, plaintiffs often know they were hit from behind but have no access to the circumstances leading up to the impact—leaving gaps in proof for breach and causation.
To address this, Florida courts created a rebuttable presumption: if a rear-end collision occurs, the trailing driver is presumed negligent. This shifts the burden of production to the defendant, who must offer a “substantial and reasonable explanation” to overcome the presumption. If successful, the case proceeds to the jury without the benefit of the presumption. See Gulle v. Boggs, 174 So.2d 26, 28–29 (Fla. 1965); Brethauer v. Brassell, 347 So.2d 656 (Fla. 4th DCA 1977).
Originally developed during Florida’s contributory negligence era—where any negligence on the plaintiff’s part barred recovery—the rule had significant weight. Under today’s comparative fault framework, however, negligence is apportioned, and partial fault does not automatically defeat a claim. See Shayne v. Saunders, 176 So. 495 (Fla. 1937); Stephens v. Dichtenmueller, 207 So.2d 718 (Fla. 4th DCA 1968), quashed on other grounds.