Long-Term Pavement Performance Committee Letter Report: August 8, 2013

On August 8, 2013, TRB’s Long-Term Pavement Performance (LTPP) Committee sent its 32nd letter report to Victor Mendez, administrator of the Federal Highway Administration (FHWA), and Frederick G. “Bud” Wright, executive director of the American Association of State Highway and Transportation Officials (AASHTO). The committee’s reports are aimed at supporting the further success of the LTPP program, securing the future of the LTPP database, and facilitating the fulfillment of the program’s promise of better roads through the development and utilization of LTPP’s products.

The report includes recommendations pertaining to multi-year plans for LTPP’s activities; representations of LTPP’s past, present, and future funding; removal of retired weigh-in-motion equipment; the experimental design and material testing plans for warm-mix asphalt experiments; the possible use of axle load spectra in place of equivalent single axle loads, and Modern-Era Retrospective Analysis for Research and Applications (MERRA) climate data; procedures for seeking state feedback on their collection and use of LTPP data; and the distribution of LTPP’s Standard Data Release 28.

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