Evaluation of Trapezoidal Shaped Grooves

Figure 50. The ORD Friction Run 10E10 (Longer test section, 10 ft from centerline)

Figure 51. The ORD Friction Run 10E15 (Longer test section, 15 ft from centerline)

Figure 52. The ORD Friction Run 10E20 (Longer test section, 20 ft from centerline)

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