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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
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Publication Number: FHWA-HRT-05-079
Date: May 2006
Optimization of Traffic Data Collection for Specific Pavement Design Applications
Appendix A. CARD-4 and CARD-7 Descriptions
a Used only for truck combinations having six or more axles. Immediately follows the face record.
Topics: research, infrastructure, pavements and materials
Keywords: research, infrastructure, pavements and materials,Traffic input, NCHRP 1-37A design guide, LTPP, clustering, tolerable errors, confidence level.
TRT Terms: Pavements--Design and construction--Data processing, Traffic surveys--Data processing, Long-Term Pavement Performance Program (U.S.), Pavement performance