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California Friction Testing At MnROADs (CA-342) How Things Work November 12, 2008

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CA342 Friction Testing

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CA-342 Equipment Operation Smooth Tire 6 mm Offset Above Pavement Distance Measuring Scale Slide Stand Springs Release

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Shipping and Crating

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Calibration of the Equipment Glycerin Container WD 40 Serrated Edge Calibration Plate Mounting Plate Environmental Trays Power Cable

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MnROADs Test Locations Seven Friction Tests Conducted at Each Location (0, 5, 15, 30, 45, 90, 0 degrees) Three Locations Tested within Each Cell MnROADs Cells Tested Cell 7 NGCS Cell 8 CDG Cell 9 NGCS Lite Cell 10 RTT Cell 13 Astro Turf Cell 15 AC

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Operation of Test Device for Determining Effect of Test Angle on Friction Value 0 5 153045

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Testing at 90 Degrees

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Placing Glycerin on Wheel and Pavement

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Friction as a Function of Test Angle

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Questions?

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