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If you don’t succeed, try, try again. And that’s just what Ford did – when the 2011 Edge and Lincoln MKX didn’t make the cut for Insurance Institute for Highway Safety’s (IIHS) Top Safety Pick award, they made improvements to roof strength, and finally got the thumbs up from the IIHS.
These midsize SUVs jumped from acceptable to good for roof strength in rollover crashes to earn the Top Safety pick award. In order to pick up this prize, vehicles must earn the top rating of good for front, side, rollover, and rear crash protection, and they must have electronic stability control as a standard feature (ESC).
In the IIHS’s roof strength evaluation, the Edge and the Lincoln MKX withstood a force equal to 4.7 times the vehicles’ weight. To earn a good rating, vehicles must achieve a strength-to-weight ratio of 4 or higher. Only models produced after February, 2011 can boast TSP certification.