Abstract
When evaluating what is commonly called “low speed” rear-end collisions it is important to understand the limitation and assumptions inherent in the data and approaches used. Many errors exist in determining impact speed and occupant injury potential in these types of impacts. These errors range from the inappropriate use of damage to misapplication of the laws of physics to the promulgation of non-existent thresholds. This paper addresses eleven of the common errors that can lead to erroneous conclusions.