The chances are about 14 in 100 that, if an insured car occupant is injured in an auto accident in the U.S., an uninsured motorist caused the accident, according to a recent Insurance Research Council (IRC) study. However, the problem varies widely from state to state. Uninsured Motorists 2000 Edition, an update to a previous IRC study examining the uninsured motorist problem, contains two additional years of the latest available data. According to data just released (for the period of 1995 to 1997), the five states with the highest uninsured driver estimates were Colorado (32%), New Mexico (30%), South Carolina (28%), Alabama (25%), and Mississippi (25%). Colorado's estimate is high relative to other states, however, because bodily injury claims are subject to a $2,500 monetary threshold and uninsured motorist claims are not. In other states, the thresholds are the same.) The five states with the lowest unin-sured driver estimates were Maine (4%), North Carolina (6%), South Dakota (6%), Massachusetts (7%), and Wyoming (7%). Sixteen states and the District of Columbia had a ratio of uninsured motorists to bodily injury claim frequencies above the national average, while thirty-four states had a ratio below the national average.