![]() The equivalent of a K12: 元 rating would be an M50: P1 rating. You’ll notice M-ratings accommodate for farther distances than K-ratings, which can make for a more accurate measure. ![]() P4 rating: A vehicle traveled farther than 98.4 feet.P3 rating: A vehicle traveled between 23.1 and 98.4 feet.P2 rating: A vehicle traveled between 3.31 and 23 feet.P1 rating: A vehicle traveled 3.3 feet or less.M-ratings are also divided into P1, P2, P3 and P4 classifications, based on how far the vehicle traveled beyond the barrier: M-ratings and K-ratings are similar enough to be interchangeable. ![]() The vehicles in these tests traveled at 30, 40 and 50 miles per hour, in that order. A K4 and M30 rating are equivalent, a K8 rating matches M40, and a K12 rating matches M50. You can match K-rated and M-rated tests based on speed. M-ratings are similar to K-ratings in that their numeral designations correspond with test vehicle speeds. Like K-ratings, M-ratings are based on vehicle size, speed and travel distance. ASTM crash ratings are different because they’re based on how far a vehicle’s payload travels beyond a barrier, rather than its front. M-ratings have replaced K-ratings in recent years, using standards from the American Society for Testing and Materials (ASTM). When interpreting K-ratings, use the “K” number to determine the test vehicle’s speed and the “L” number to determine how far it traveled beyond the barrier. The strongest barrier, in terms of K-ratings, would be K12: 元 - in this case, a 15,000-pound vehicle moving at 50 miles per hour penetrated the barrier less than 3 feet.
0 Comments
Leave a Reply. |