AUTO TEST RATES RISK OF ROLLOVER.(MAIN)

Byline: DEE-ANN DURBIN Associated Press

WASHINGTON -- The Ford Explorer Sport Trac got the worst rating among 14 vehicles subjected to a new government safety test designed to predict the likelihood of a rollover during a sharp turn.

The federal auto safety agency, which announced the ratings Wednesday, uses a system in which five stars is the best score and means the likelihood of rollover is less than 10 percent. The system is based on a driving test and a mathematical formula based on vehicle structure. A four-star rating means a vehicle has a 10 percent to 20 percent chance of rolling over in a one-vehicle crash. Three stars means a 20 percent to 30 …