Evaluation of Trapezoidal Shaped Grooves

Figure 53. The ORD Friction Run 28W10 (Shorter test section, 10 ft from centerline)

Figure 54. The ORD Friction Run 28W15 (Shorter test section, 15 ft from centerline)

Figure 55. The ORD Friction Run 28W20 (Shorter test section, 20 ft from centerline)

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