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Technical Information

New PerRoad-Xpress Software for Designing Low-Volume Roads

The Asphalt Pavement Alliance (APA) has announced the release of new PerRoad-Xpress software for the design of Perpetual Pavements.
This addition to the PerRoad software design suite supplements the full design capabilities of PerRoad 3.2. This new low-and medium volume road and parking-lot version of the popular PerRoad pavement design program is available free.
This new design package is an easy-to-use, all-on-one-screen program for designing Perpetual Pavements for low-and medium-volume roads and parking lots.
PerRoad-Xpress allows the designer either to use defaults for traffic and soil, or to input the actual values if they are known. Granular base thicknesses from 0 to 10 inches are included. If the average yearly modulus of the asphalt pavement is known, then it can be input by the user, or if it is not known, a default value can be selected.
The software quickly provides the user with a recommendation for the total thickness of asphalt pavement needed for a particular situation.
PerRoad-Xpress was developed in response to requests by public works officials and owners of commercial property by Auburn University’s Dr. David Timm, author of the original PerRoad program.
PerRoad-Xpress can be downloaded for free from the Asphalt Pavement Alliance web site at  PerRoad 3.2, the latest version of the original software, is also available for free download from the same Web site.

PE-2: Estimating Carbon footprints for Asphalt and Concrete Pavements
Michigan Technological University (MTU) recently released software, PE-2, that quantifies one of the more common metrics of environmental impact: greenhouse gas (GHG) emissions, also known as carbon footprint.  The software was developed by MTU as part of a Michigan Department of Transportation (MDOT) sponsored research project.

PE-2 can be accessed by clicking here.  For an informative article on the development and use of the PE-2 Project Emission Estimator click here

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