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External LTPP Related Research
The LTPP program conducts research internally and provides data, suggested research problem statements, and expert support to external research programs, including FHWA’s Transportation Pooled Fund studies and the National Cooperative Highway Research Program (NCHRP). The following, while not an exhaustive list, includes examples of this support for each program.
The Transportation Pooled Fund (TPF) Program enables State Departments of Transportation (DOT), and other public and private entities, to combine resources to address transportation-related challenges. By combining efforts and resources on high-priority highway research topics, our nation’s transportation agencies can advance solutions that stimulate economic growth and improve climate resilience. Studies must be initiated and led by either a state DOT or the FHWA. To find study partners, the lead agency posts its proposed topic on the TPF Program website. In addition to State DOTs and FHWA, other Federal agencies, regional and local agencies, academic institutions, professional associations, and private industry can join the study as partners by pledging funds or other resources.
TPF Studies Supported by LTPP:
- TPF-5(332) Performing Forensic Evaluations of LTPP Remaining Sections Before They Leave Service
- TPF-5(500) LTPP Forensic Investigations - Stage 2
- TPF-5(291) Development of an SPS-2 Pavement Preservation Experiment
- TPF-5(004) Long-Term Pavement Performance (LTPP) Specific Pavement Study (SPS) Traffic Data Collection
- TPF-5(522) National Partnership to Improve the Quality of Pavement Preservation Treatment Construction & Data Collection Practices (PG Phase III)
- TPF-5(537) Improving the Quality of Highway Profile Measurement
- TPF-5(463) Pavement Surface Properties Consortium: Phase III - Managing the Pavement Properties for Improved Safety
- Solicitation 1646 Improve pavement surface distress and transverse profile data collection and analysis, Phase III
The TPF Program has limited access to all completed studies, including associated reports. Questions on these and other studies should be directed to:
Transportation Pooled Fund Program Manager
Tricia Sergeson
patricia.sergeson@dot.gov
OR
R&T Program Development and Partnership Team Director
Raju Mooney
rajashree.mooney@dot.gov
Initiated by AASHTO in 1962, NCHRP addresses nationwide highway research needs through coordinated projects administered by the Transportation Research Board (TRB), leveraging expertise from federal, state, and academic sectors to develop implementable solutions. Research topics are selected based on input from transportation leaders and overseen by AASHTO committees and FHWA. Several problem statements submitted by LTPP have been funded.
NCHRP-Supported LTPP Projects:
- LTPP Data Analysis. Phase I: Validation of Guidelines for K-Value Selection and Concrete Pavement Performance Prediction
[https://www.fhwa.dot.gov/publications/research/infrastructure/pavements/ltpp/reports/96198/index.cfm]
- Significance of "As-Constructed" HMA Air Voids to Pavement Performance from an Analysis of LTPP Data
[https://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rrd_269.pdf]
- LTPP Data Analysis: Influence of Design and Construction Features on the Response and Performance of New Flexible and Rigid Pavements
[https://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_w74.pdf]
- Effect of Design and Site Factors on Roughness of Flexible Pavements in the LTPP SPS-1 Experiment (With discussion)
[https://ascelibrary.org/doi/abs/10.1061/40838%28191%2966]
- LTPP Computed Parameter: Dynamic Modulus
[https://rosap.ntl.bts.gov/view/dot/35741]
- NCHRP 20-50(22)A LTPP Data Analysis Guidelines to Improve Use of FWD and Longitudinal Profile Measurements [https://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=5085]
- NCHRP 1-49 Guide for Conducting Forensic Investigation of Highway Pavements [https://nap.nationalacademies.org/catalog/22507/guide-for-conducting-forensic-investigations-of-highway-pavements]
- Guidelines For Implementing NCHRP 1-37A M-E Design Procedures in Ohio: Volume 1- Summary of Findings, Implementation Plan, and Next Steps
[https://rosap.ntl.bts.gov/view/dot/20553]
- Adaptation of NCHRP Project 1-41 Reflection Cracking Models for Semirigid Pavement Design in AASHTOWare Pavement ME Design
[https://journals.sagepub.com/doi/10.3141/2590-14]
- NCHRP 01-63 [Active] Incorporating Traffic Speed Deflection Devices Measurements into Pavement Management and Design [https://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=5489]
- NCHRP 01-65 [Anticipated] Improving Slab Warping Predictions of AASHTOWare PMED for Concrete Pavements [https://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=5839]
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