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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

This report is an archived publication and may contain dated technical, contact, and link information
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Publication Number:  FHWA-HRT-15-049    Date:  April 2015
Publication Number: FHWA-HRT-15-049
Date: April 2015


The Long-Term Pavement Performance Program

Photo. Concrete paving machine laying fresh pavement. Credit: © American Concrete Pavement Association, Inc. www.acpa.org.
© American Concrete Pavement Association, Inc. www.acpa.org.


AADT average annual daily traffic  
AASHO American Association of State Highway Officials  
AASHTO American Association of State Highway and Transportation Officials  
AC asphalt concrete  
ADEP AIMS Data Entry Portal  
AIMS Ancillary Information Management System  
AMRL AASHTO Materials Reference Laboratory  
APT accelerated pavement testing  
ASCE American Society of Civil Engineers  
ASCII American Standard Code for Information Exchange  
ASTM ASTM International, formerly American Society for Testing and Materials  
ATB asphalt-treated base  
ATDL automated temperature data logger  
AVC automatic vehicle classification  
AWS automated weather stations  
BAA Broad Agency Announcement  
CCC Canadian Climate Center  
CDOT Colorado Department of Transportation  
COPES Concrete Pavement Evaluation System  
CRCP continuously reinforced concrete pavement  
CRREL Cold Regions Research and Engineering Laboratory  
C-SHRP Canadian Strategic Highway Research Program  
CSI Campbell Scientific, Inc.  
CSSC Customer Support Service Center  
CTB cement-treated base  
CTDB Central Traffic Database  
CTDOT Connecticut Department of Transportation  
CTE coefficient of thermal expansion  
DAOFR Data Analysis/Operations Feedback Report  
DAWG Data Analysis Working Group  
DCP dynamic cone penetrometer  
DIM Distress Identification Manual  
DiVA Distress Viewer and Analysis  
DLR dynamic load response  
DMI Distance Measuring Instrument  
DOT Department of Transportation  
ESAL equivalent single-axle load  
ETG expert task group  
FALCON Focus Area Leadership and Coordination  
FHWA Federal Highway Administration  
FWD falling weight deflectometer  
FWDUG FWD User Group  
GOE General Operating Expenses  
GPR ground penetrating radar  
GPS General Pavement Study  
GPSr Global Positioning System receiver  
HERS Highway Economics Requirement System  
HMA hot-mix asphalt  
HPMS Highway Performance Monitoring System  
ICC International Cybernetics Corporation  
IDIQ indefinite delivery/indefinite quantity  
IMS Information Management System  
IPRD Innovative Pavement Research and Deployment Program  
IRI International Roughness Index  
ISO International Organization for Standardization  
ISTEA Intermodal Surface Transportation Efficiency Act of 1991  
JCP jointed concrete pavement  
JPCP jointed plain concrete pavement  
JRCP jointed reinforced concrete pavement  
KDOT Kansas Department of Transportation  
LCOM LTPP Committee  
LDEP LTPP Data Entry Portal  
LSPEC LTPP Special Activities Committee  
LTAS LTPP Traffic Analysis Software  
LTBP Long-Term Bridge Program  
LTM Long-Term Pavement Monitoring  
LTPP Long-Term Pavement Performance Program  
LTPP-PLUG LTPP Pavement Loading User Guide  
MAP-21 Moving Ahead for Progress in the 21st Century Act  
MEPDG Mechanistic-Empirical Pavement Design Guide  
MERRA Modern Era–Retrospective Analysis for Research and Applications  
MPD mean profile depth  
MRC Measurement Research Corporation  
MRL Materials Reference Library  
MS-DOS® Microsoft Disk Operating System  
NASA National Aeronautics and Space Administration  
NCDC National Climatic Data Center  
NCHRP National Cooperative Highway Research Program  
NDT nondestructive deflection testing  
NHI National Highway Institute  
NIMS National Information Management System  
NOAA National Oceanic and Atmospheric Administration  
NRC National Research Council  
NYSDOT New York State Department of Transportation  
OPR Operational Problem Report  
OWL Optimal WIM Site Locator software  
PADIAS PAvement DIstress Analysis System  
PCC Portland cement concrete  
PennDOT Pennsylvania Department of Transportation  
PG performance grade  
PHT Performance Health Track  
PLUG Pavement Loading User Guide  
PPAC Pavement Performance Advisory Committee  
PPCP precast prestressed concrete pavement  
PPDB Pavement Performance Database  
QC/QA quality control/quality assurance  
RABA Revenue Aligned Budget Authority  
RAC rubberized asphalt concrete  
RAP recycled asphalt pavement  
RCOC regional coordination office contractor  
RDBMS relational database management system  
RIMS Regional Information Management System  
RSC regional support contractor  
RTAC Roads and Transportation Association of Canada  
SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users  
SCOR AASHTO’s Standing Committee on Research  
SDR Standard Data Release  
SHRP Strategic Highway Research Program  
SI International System of Units  
SMERP Supplemental Maintenance Effectiveness Research Program  
SMP Seasonal Monitoring Program  
SOM Subcommittee on Materials  
SPR Software Performance Report  
SPS Specific Pavement Study  
STAA Surface Transportation Assistance Act of 1982  
STRS Strategic Transportation Research Study  
STURAA Surface Transportation and Uniform Relocation Assistance Act of 1987  
TAC technical assistance contract/contractor  
TEA-21 Transportation Equity Act for the 21st Century  
TDR time domain reflectometer  
TFHRC Turner-Fairbank Highway Research Center  
TRB Transportation Research Board  
TSSC technical services support contract/contractor  
TxDOT Texas Department of Transportaion  
VMS® Virtual Memory System  
WAAS Wide Area Augmentation System  
WIM weigh-in-motion  
WMA warm-mix asphalt  




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