United States. Department of Transportation. Federal Highway Administration
2024-07-01
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This fact sheet highlights the methodology of measuring decarbonization in the pavement lifecycle. Pavement management can be a suitable phase for considering and introducing environmental improvements to optimize pavement preservation and maintenance treatment timing, location, and type (when, where, and what) because of the phase’s focus on syste
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United States. Department of Transportation. Federal Highway Administration (2024). Measuring Decarbonization in the Pavement Lifecycle [Fact Sheet] (Report No. FHWA-HRT-24-056). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77593
United States. Department of Transportation. Federal Highway Administration. Measuring Decarbonization in the Pavement Lifecycle [Fact Sheet]. Report no. FHWA-HRT-24-056. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/77593.
United States. Department of Transportation. Federal Highway Administration Measuring Decarbonization in the Pavement Lifecycle [Fact Sheet]. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HRT-24-056, ROSA P. https://rosap.ntl.bts.gov/view/dot/77593.
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology
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2024-07-01
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This document provides guidance for State Planning and Research (SPR) peer exchanges. The document contains information about the purpose of peer exchanges and the use of peer exchanges to strategically improve research programs and guidance and resources on conducting peer exchanges. This document should be of interest to State research directors,
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United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, & United States. Federal Highway Administration. Office of Planning (2024). State Planning and Research (SPR) Guide for SPR-B Peer Exchanges (Report No. FHWA-HRT-23-101). United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology. https://rosap.ntl.bts.gov/view/dot/75907
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology and United States. Federal Highway Administration. Office of Planning. State Planning and Research (SPR) Guide for SPR-B Peer Exchanges. Report no. FHWA-HRT-23-101. United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, 2024. https://rosap.ntl.bts.gov/view/dot/75907.
United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, et al. State Planning and Research (SPR) Guide for SPR-B Peer Exchanges. United States. Department of Transportation. Federal Highway Administration. Office of Research, Development, and Technology, 2024, Report no. FHWA-HRT-23-101, ROSA P. https://rosap.ntl.bts.gov/view/dot/75907.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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This case study looks at recent activities initiated by State transportation departments to improve coordination with railroads on design-build projects.
United States. Department of Transportation. Federal Highway Administration (2024). When Road Construction Meets the Railroad: Exploring Better Design-Build Delivery (Report No. FHWA-HIF-24-099). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/80627
United States. Department of Transportation. Federal Highway Administration. When Road Construction Meets the Railroad: Exploring Better Design-Build Delivery. Report no. FHWA-HIF-24-099. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/80627.
United States. Department of Transportation. Federal Highway Administration When Road Construction Meets the Railroad: Exploring Better Design-Build Delivery. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HIF-24-099, ROSA P. https://rosap.ntl.bts.gov/view/dot/80627.
Adaptive route optimization (ARO) is a method of dynamically and effectively routing winter maintenance vehicles across all segments of a road network to meet an agency’s maintenance goals, subject to real-time disruptions from atmospheric and road weather conditions, traffic congestion, incidents, work zones, and resource constraints. ARO could en
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Garrett, K., Hawkins, N., Dong-O’Brien, J., & Monteiro, H. (2024). Adaptive Route Optimization for Operations: Feasibility and Readiness Report (Report No. FHWA-HOP-24-043). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77379
Garrett, Kyle, Neal Hawkins, Jing Dong-O’Brien, and Heather Monteiro. Adaptive Route Optimization for Operations: Feasibility and Readiness Report. Report no. FHWA-HOP-24-043. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/77379.
Garrett, Kyle, et al. Adaptive Route Optimization for Operations: Feasibility and Readiness Report. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HOP-24-043, ROSA P. https://rosap.ntl.bts.gov/view/dot/77379.
This report describes Federal Highway Administration research efforts to develop mechanistic-based performance testing and analysis tools for the purpose of understanding fundamental pavement performance and easing deployment of performance tests and associated analysis and evaluation tools to understand long-term performance.
Kim, Y. R., Underwood, B. S., Guddati, M., Ghanbari, A., Keshavarzi, B., Wang, Y. D., Jeong, J., Mocelin, D., Pivetta, F. D. C., & Saleh, N. F. (2024). Development of Balanced Mixture Design Index Parameters and the Flex Suite of Performance Analysis Tools for Asphalt Pavements— Volume II (Report No. FHWA-HRT-24-111). United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development. https://doi.org/10.21949/1521559
Kim, Y. Richard, B. Shane Underwood, Murthy Guddati, Amir Ghanbari, Behrooz Keshavarzi, Yizhuang David Wang, Jaehoon Jeong, Douglas Mocelin, Felipe Do Canto Pivetta, and Nooralhuda, F. Saleh. Development of Balanced Mixture Design Index Parameters and the Flex Suite of Performance Analysis Tools for Asphalt Pavements— Volume II. Report no. FHWA-HRT-24-111. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2024. https://doi.org/10.21949/1521559.
Kim, Y. Richard, et al. Development of Balanced Mixture Design Index Parameters and the Flex Suite of Performance Analysis Tools for Asphalt Pavements— Volume II. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development, 2024, Report no. FHWA-HRT-24-111, ROSA P. https://doi.org/10.21949/1521559.
Changeable message sign (CMS) messaging is an important tool for distributing traveler information to drivers. Careful CMS message selection can help drivers make informed travel decisions and increase the safety and usability of roadways—particularly during nonrecurring events. The current approach is designed to help CMS operators construct CMS m
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Weaver, S., Ahmed, A., Jannat, M., Olko, S., & Arnold, M. (2024). A Systematic Approach on CMS Messaging Selection During Nonrecurring Events: Decision Tree (Report No. FHWA-HRT-24-139). United States. Federal Highway Administration. Office of Safety and Operations Research and Development. https://doi.org/10.21949/1521604
Weaver, Starla, Ananna Ahmed, Mafruhatul Jannat, Sarah Olko, and Michelle Arnold. A Systematic Approach on CMS Messaging Selection During Nonrecurring Events: Decision Tree. Report no. FHWA-HRT-24-139. United States. Federal Highway Administration. Office of Safety and Operations Research and Development, 2024. https://doi.org/10.21949/1521604.
Weaver, Starla, et al. A Systematic Approach on CMS Messaging Selection During Nonrecurring Events: Decision Tree. United States. Federal Highway Administration. Office of Safety and Operations Research and Development, 2024, Report no. FHWA-HRT-24-139, ROSA P. https://doi.org/10.21949/1521604.
United States. Department of Transportation. Federal Highway Administration. Office of Operations
2024-07-01
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National Travel Time Dashboard: Interstate Highways
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The Monthly Urban Congestion Report (UCR) provides a state-level overview of traffic congestion and reliability trends on Interstate highways. Published every month, the report compares data from the most recent month with the same month in the previous year. It uses travel time data from the Federal Highway Administration’s National Performance Ma
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United States. Department of Transportation. Federal Highway Administration. Office of Operations (2024). National Travel Time Dashboard: Interstate Highways, July 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations. https://rosap.ntl.bts.gov/view/dot/87934
United States. Department of Transportation. Federal Highway Administration. Office of Operations. National Travel Time Dashboard: Interstate Highways, July 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2024. https://rosap.ntl.bts.gov/view/dot/87934.
United States. Department of Transportation. Federal Highway Administration. Office of Operations National Travel Time Dashboard: Interstate Highways, July 2024. United States. Department of Transportation. Federal Highway Administration. Office of Operations, 2024, ROSA P. https://rosap.ntl.bts.gov/view/dot/87934.
This document is a technical summary of the Purdue University report, Measurement of Post-Tensioning Tendon Force Using Optical Fiber Technology, available at https://rosap.ntl.bts.gov/view/dot/75679. This report is a deliverable from a research study sponsored by the Federal Highway Administration (FHWA). The FHWA is the source of all figures and
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Williams, C. S., Okumus, P., Khatri, M. B., & Jung, M. J. (2024). Long-Term Monitoring of Post-Tensioning Tendon Force Using Optical Fiber Technology [TechBrief] (Report No. FHWA-HIF-24-085). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/80625
Williams, Christopher S., Pinar Okumus, Manan B Khatri, and Mi Jin Jung. Long-Term Monitoring of Post-Tensioning Tendon Force Using Optical Fiber Technology [TechBrief]. Report no. FHWA-HIF-24-085. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/80625.
Williams, Christopher S., et al. Long-Term Monitoring of Post-Tensioning Tendon Force Using Optical Fiber Technology [TechBrief]. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HIF-24-085, ROSA P. https://rosap.ntl.bts.gov/view/dot/80625.
Complex freeway interchanges are difficult to navigate in many cases. Poorly designed signs at such locations, along with contributing roadway and traffic factors, frequently lead to increased crash risks. A sign design issue typically seen on urban freeways is the use of complex guide signs. The 2009 Manual on Uniform Traffic Control Devices sets
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Li, Y. (., Kassing, A., Perez, M., Medina, A., & Gibbons, R. B. (2024). Freeway Guide Sign Performance at Complex Interchanges: Reducing Information Overload (Report No. FHWA-HRT-24-070). United States. Federal Highway Administration. Office of Safety Research and Development. https://doi.org/10.21949/1521740
Li, Yingfeng (Eric), Andrew Kassing, Miguel Perez, Alejandra Medina, and Ronald B. Gibbons. Freeway Guide Sign Performance at Complex Interchanges: Reducing Information Overload. Report no. FHWA-HRT-24-070. United States. Federal Highway Administration. Office of Safety Research and Development, 2024. https://doi.org/10.21949/1521740.
Li, Yingfeng (Eric), et al. Freeway Guide Sign Performance at Complex Interchanges: Reducing Information Overload. United States. Federal Highway Administration. Office of Safety Research and Development, 2024, Report no. FHWA-HRT-24-070, ROSA P. https://doi.org/10.21949/1521740.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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The Arkansas Department of Transportation (ARDOT) organized their 2022–2027 Strategic Highway Safety Plan (SHSP) into four emphasis areas in alignment with the Safe System Elements (Safe Road Users, Safe Vehicles, PostCrash Care, and Safe Roads and Safe Speeds combined) to support their long-term goal of zero fatalities and serious injuries.
United States. Department of Transportation. Federal Highway Administration (2024). Integrating the Safe System Approach in the Highway Safety Improvement Program: Arkansas Case Study (Report No. FHWA-SA-24-037). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/84761
United States. Department of Transportation. Federal Highway Administration. Integrating the Safe System Approach in the Highway Safety Improvement Program: Arkansas Case Study. Report no. FHWA-SA-24-037. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/84761.
United States. Department of Transportation. Federal Highway Administration Integrating the Safe System Approach in the Highway Safety Improvement Program: Arkansas Case Study. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-SA-24-037, ROSA P. https://rosap.ntl.bts.gov/view/dot/84761.
This technote provides an overview of the Long-Term Pavement Performance (LTPP) Analysis-Ready datasets. The goal of the Long-Term Pavement Performance (LTPP) program is “to increase pavement life by the investigation of long-term performance. . . .” (FHWA 2015). One of the six objectives identified to support this goal was the establishment of a n
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Afsharikia, Z., & Rada, G. R. (2024). LTPP Analysis-Ready Datasets: New Features and Exciting Opportunities (Report No. FHWA-HRT-24-134). United States. Department of Transportation. Federal Highway Administration. https://doi.org/10.21949/1521579
Afsharikia, Zahra and Gonzalo R. Rada. LTPP Analysis-Ready Datasets: New Features and Exciting Opportunities. Report no. FHWA-HRT-24-134. United States. Department of Transportation. Federal Highway Administration, 2024. https://doi.org/10.21949/1521579.
Afsharikia, Zahra, and Gonzalo R. Rada LTPP Analysis-Ready Datasets: New Features and Exciting Opportunities. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HRT-24-134, ROSA P. https://doi.org/10.21949/1521579.
United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
2024-07-01
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This case study discusses benefits and challenges of incorporating value engineering into Florida and Virginia Department of Transportation projects.
United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure (2024). Value Engineering Enhances Quality and Savings in Florida and Virginia Highway Construction [Case Study] (Report No. FHWA-HIF-24-080). United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure. https://rosap.ntl.bts.gov/view/dot/83892
United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure. Value Engineering Enhances Quality and Savings in Florida and Virginia Highway Construction [Case Study]. Report no. FHWA-HIF-24-080. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure, 2024. https://rosap.ntl.bts.gov/view/dot/83892.
United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Value Engineering Enhances Quality and Savings in Florida and Virginia Highway Construction [Case Study]. United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure, 2024, Report no. FHWA-HIF-24-080, ROSA P. https://rosap.ntl.bts.gov/view/dot/83892.
The purpose of this Tech Brief is to present an overview of sampling procedures for asphalt mixtures. The document is intended for highway agency and contractor engineers.
Mawdsley, R., & Cavalline, T. L. (2024). Quality Assurance Asphalt Mixture Sampling [Tech Brief] (Report No. FHWA-HIF-24-071). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/77866
Mawdsley, Randall and Tara L Cavalline. Quality Assurance Asphalt Mixture Sampling [Tech Brief]. Report no. FHWA-HIF-24-071. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/77866.
Mawdsley, Randall, and Tara L Cavalline Quality Assurance Asphalt Mixture Sampling [Tech Brief]. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HIF-24-071, ROSA P. https://rosap.ntl.bts.gov/view/dot/77866.
The objective of this project was to evaluate and produce uniform recommendations for Advisory Exit and Ramp Speed signs (W13-2 and W13-3) and Combination Horizontal Alignment/Advisory Exit and Ramp Speed signs (W13-6 and W13-7), including basis for speed designation, use of “Exit” versus “Ramp,” effects of sign placement, and optimization of sign
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Katz, B., Kissner, E., Filler, E., & Jackson, S. (2024). Evaluation of Advisory Exit and Ramp Speed Signs [TechBrief] (Report No. FHWA-HRT-24-138). United States. Federal Highway Administration. Office of Safety and Operations Research and Development. https://doi.org/10.21949/1521582
Katz, Bryan, Erin Kissner, Erin Filler, and Steve Jackson. Evaluation of Advisory Exit and Ramp Speed Signs [TechBrief]. Report no. FHWA-HRT-24-138. United States. Federal Highway Administration. Office of Safety and Operations Research and Development, 2024. https://doi.org/10.21949/1521582.
Katz, Bryan, et al. Evaluation of Advisory Exit and Ramp Speed Signs [TechBrief]. United States. Federal Highway Administration. Office of Safety and Operations Research and Development, 2024, Report no. FHWA-HRT-24-138, ROSA P. https://doi.org/10.21949/1521582.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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FHWA R&T Now
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A newsletter about research, development, and technology (RD&T) at the U.S. Department of Transportation’s (USDOT) Federal Highway Administration (FHWA).
United States. Department of Transportation. Federal Highway Administration (2024). FHWA R&T Now [July 2024]. United States. Department of Transportation. Federal Highway Administration. https://doi.org/10.21949/1521576
United States. Department of Transportation. Federal Highway Administration. FHWA R&T Now [July 2024]. United States. Department of Transportation. Federal Highway Administration, 2024. https://doi.org/10.21949/1521576.
United States. Department of Transportation. Federal Highway Administration FHWA R&T Now [July 2024]. United States. Department of Transportation. Federal Highway Administration, 2024, ROSA P. https://doi.org/10.21949/1521576.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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This Vehicle Size and Weight (VSW) Research Updates Brief provides U.S. Department of Transportation (USDOT) VSW experts with recurring updates about VSW-related projects, research, news, and events. VSW research topics refer to safety, pavement, bridges, mode choice, enforcement, economics, data, technology, regulations, guidance, and other relate
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United States. Department of Transportation. Federal Highway Administration (2024). Vehicle Size and Weight Research Updates Brief Spring 2024 (Report No. FHWA-HOP-24-059). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/75858
United States. Department of Transportation. Federal Highway Administration. Vehicle Size and Weight Research Updates Brief Spring 2024. Report no. FHWA-HOP-24-059. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/75858.
United States. Department of Transportation. Federal Highway Administration Vehicle Size and Weight Research Updates Brief Spring 2024. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HOP-24-059, ROSA P. https://rosap.ntl.bts.gov/view/dot/75858.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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As-built drawings are an essential part of construction project documentation. They capture changes made during construction, deviations from as-designed plans, and provide asset-specific information for use in the operations and maintenance (O&M) phase of roadway facilities. Traditionally, as-built drawings were presented as two-dimensional (2D) p
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United States. Department of Transportation. Federal Highway Administration (2024). Guide for Digital As-Builts Using Integrated Digital Workflows (Report No. FHWA-HIF-24-061). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/79355
United States. Department of Transportation. Federal Highway Administration. Guide for Digital As-Builts Using Integrated Digital Workflows. Report no. FHWA-HIF-24-061. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/79355.
United States. Department of Transportation. Federal Highway Administration Guide for Digital As-Builts Using Integrated Digital Workflows. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HIF-24-061, ROSA P. https://rosap.ntl.bts.gov/view/dot/79355.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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Data is a crucial asset for the Iowa Department of Transportation (Iowa DOT), and the agency recognizes the need for a comprehensive data management strategy to facilitate a seamless exchange of information through digital as-builts (DABs) as it transitions to digital workflows. The agency’s current process for creating DABs involves redlining PDFs
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United States. Department of Transportation. Federal Highway Administration (2024). Techbrief: Digital As-Builting as an Integral Part of Digital Delivery — An Iowa Dot Case Study (Report No. FHWA-HIF-24-063). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/80419
United States. Department of Transportation. Federal Highway Administration. Techbrief: Digital As-Builting as an Integral Part of Digital Delivery — An Iowa Dot Case Study. Report no. FHWA-HIF-24-063. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/80419.
United States. Department of Transportation. Federal Highway Administration Techbrief: Digital As-Builting as an Integral Part of Digital Delivery — An Iowa Dot Case Study. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HIF-24-063, ROSA P. https://rosap.ntl.bts.gov/view/dot/80419.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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As-built drawings have long served as a critical construction documentation that captures how a project was actually built, noting deviations from the original plans and any changes made during construction. Traditionally the transportation agencies have used two-dimensional (2D) paper sheets, image scans, and document-based PDFs for as-builts. Tec
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United States. Department of Transportation. Federal Highway Administration (2024). Guide for Digital As-Builts Using Simplified Digital Workflows (Report No. FHWA-HIF-24-062). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/79356
United States. Department of Transportation. Federal Highway Administration. Guide for Digital As-Builts Using Simplified Digital Workflows. Report no. FHWA-HIF-24-062. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/79356.
United States. Department of Transportation. Federal Highway Administration Guide for Digital As-Builts Using Simplified Digital Workflows. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HIF-24-062, ROSA P. https://rosap.ntl.bts.gov/view/dot/79356.
United States. Department of Transportation. Federal Highway Administration
2024-07-01
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This Vehicle Size and Weight (VSW) Research Updates Brief provides U.S. Department of Transportation (USDOT) VSW experts with recurring updates about VSW-related projects, research, news, and events. VSW research topics refer to safety, pavement, bridges, mode choice, enforcement, economics, data, technology, regulations, guidance, and other relate
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United States. Department of Transportation. Federal Highway Administration (2024). Vehicle Size and Weight Research Updates Brief Spring 2023 (Report No. FHWA-HOP-24-058). United States. Department of Transportation. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/75859
United States. Department of Transportation. Federal Highway Administration. Vehicle Size and Weight Research Updates Brief Spring 2023. Report no. FHWA-HOP-24-058. United States. Department of Transportation. Federal Highway Administration, 2024. https://rosap.ntl.bts.gov/view/dot/75859.
United States. Department of Transportation. Federal Highway Administration Vehicle Size and Weight Research Updates Brief Spring 2023. United States. Department of Transportation. Federal Highway Administration, 2024, Report no. FHWA-HOP-24-058, ROSA P. https://rosap.ntl.bts.gov/view/dot/75859.
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