characteristics of pedestrians non-motor-vehicle-involved incidents pedestrian crash types pedestrian safety pedestrians transportation engineering astm d6930 - 10 astm d6933 - 13 astm d6704 - 08 astm c128 – 15 astm c127 - 15 astm c123 / c123m – 14 astm c117 – 13 astm c88 – 13
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