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… drag reduction concepts, with an emphasis on those for trailers, using a 30% scale model of modern tractor-trailer … boat-tail (day-cab) 8,600 ± 2,400 22,700 ± 6,300 Flatbed Trailers: add side-skirts to flatbed with high irregular … Reducing the aerodynamic drag associated with dry-van trailers was the primary focus of the current effort, and …
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… and Interlocking Signals 405. Clear - Proceed. 1. A high mast, single aspect signal displaying green. 2. A high mast, staggered, double aspect signal displaying green on the top, red on the bottom. 3. A high mast, inline , double aspect signal, displaying green on …
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