This research note describes modifications to the National Highway Traffic Safety Administration's (NHTSA's) BELT USE regression model. BELT USE is a second-degree polynomial model that was created in 1994. Basically, this model uses the national observed belt use rate to predict lives-saved by safety belts. This note describes changes made to the model in 2001 and 2003. The most current version of the model (2003) incorporated the impact of air bags and uses updated effectiveness rates. (Author/publisher)
Abstract