The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
Idaho Transportation Department (ITD) has been using High-Early Strength (HES) concrete Class 50AF with Polypropylene fibers in several parts of the bridge in Accelerated Bridge Construction. This material is only slightly more expensive than conventional concrete, but speeds up the construction. ITD is interested in the suitability of HES concrete
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Ebrahimpour, A., Mashal, M., & Shokrgozar, A. (2022). Long-term Performance of HES Class 50AF Concrete with Polypropylene Fibers as Field-Cast Connection between Deck Bulb-T Girders in SH-36 Bridge over Bear River (Report No. FHWA-ID-22-288, RP 288). Idaho Transportation Department. https://rosap.ntl.bts.gov/view/dot/68703
Ebrahimpour, Arya, Mustafa Mashal, and Ali Shokrgozar. Long-term Performance of HES Class 50AF Concrete with Polypropylene Fibers as Field-Cast Connection between Deck Bulb-T Girders in SH-36 Bridge over Bear River. Report no. FHWA-ID-22-288, RP 288. Idaho Transportation Department, 2022. https://rosap.ntl.bts.gov/view/dot/68703.
Ebrahimpour, Arya, et al. Long-term Performance of HES Class 50AF Concrete with Polypropylene Fibers as Field-Cast Connection between Deck Bulb-T Girders in SH-36 Bridge over Bear River. Idaho Transportation Department, 2022, Report no. FHWA-ID-22-288, RP 288, ROSA P. https://rosap.ntl.bts.gov/view/dot/68703.
WSDOT continued to collect rutting/wear and smoothness information on a number of completed studies. This report summarizes those studies. • Open Graded Friction Courses: OGFC-AR on I-405 was more susceptible to wear than either OGFC-SBS or HMA matching the pattern seen in the I-5 and SR-520 quieter pavement test sections. • Concrete Performance an
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Uhlmeyer, J., Russell, M., Anderson, K., Schofield, K., Mahoney, J., Carlson, K., Li, J., & Littleton, K. (2022). 2022 Summary of Special Pavement Test Sections (Report No. WA-RD 919.1). Washington (State). Dept. of Transportation. Office of Research and Library Services. https://rosap.ntl.bts.gov/view/dot/67981
Uhlmeyer, Jeff, Mark Russell, Keith Anderson, Kim Schofield, Joe Mahoney, Kyler Carlson, Jianhua Li, and Kevin Littleton. 2022 Summary of Special Pavement Test Sections. Report no. WA-RD 919.1. Washington (State). Dept. of Transportation. Office of Research and Library Services, 2022. https://rosap.ntl.bts.gov/view/dot/67981.
Uhlmeyer, Jeff, et al. 2022 Summary of Special Pavement Test Sections. Washington (State). Dept. of Transportation. Office of Research and Library Services, 2022, Report no. WA-RD 919.1, ROSA P. https://rosap.ntl.bts.gov/view/dot/67981.
The overall goal of this research project was to examine the capabilities of FO-DTS and 2D hydraulic models for improving the prediction of scour depths at bridge foundations. To accomplish this goal, the following specific objectives were addressed: (1) to develop, test, and deploy scour monitoring devices based on FO-DTS capable of tracking chang
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Castro-Bolinaga, C., Sayde, C., Shehata, M., & Hatley, R. (2022). Evaluation of Two-Dimensional (2D) Hydraulic Models to Improve Scour Predictions and Countermeasures (Report No. 2020-03). North Carolina. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/86804
Castro-Bolinaga, Celso, Chadi Sayde, Mahmoud Shehata, and Rebecca Hatley. Evaluation of Two-Dimensional (2D) Hydraulic Models to Improve Scour Predictions and Countermeasures. Report no. 2020-03. North Carolina. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/86804.
Castro-Bolinaga, Celso, et al. Evaluation of Two-Dimensional (2D) Hydraulic Models to Improve Scour Predictions and Countermeasures. North Carolina. Department of Transportation, 2022, Report no. 2020-03, ROSA P. https://rosap.ntl.bts.gov/view/dot/86804.
TDOT has embarked on an initiative to develop data analytics and visualization capabilities using the Microsoft Power BI platform to serve the agency’s needs. Critical to the success of this initiative is the ability to identify, develop and serve a range of applications across TDOT’s various divisions, covering a variety of operating modes within
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Allen, M., & Abkowitz, M. (2022). Enhanced GIS Legacy Database for TDOT Legacy Data Phase III: Power BI Applications (Report No. RES2016-23). Tennessee. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/64538
Allen, Madeline and Mark Abkowitz. Enhanced GIS Legacy Database for TDOT Legacy Data Phase III: Power BI Applications. Report no. RES2016-23. Tennessee. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/64538.
Allen, Madeline, and Mark Abkowitz Enhanced GIS Legacy Database for TDOT Legacy Data Phase III: Power BI Applications. Tennessee. Department of Transportation, 2022, Report no. RES2016-23, ROSA P. https://rosap.ntl.bts.gov/view/dot/64538.
This study recommends best practices to curb illegal weigh station bypassing by commercial motor vehicles (CMVs). Analysis of historical data collected by Kentucky State Police – Commercial Vehicle Enforcement (KSP-CVE) for 2017-2021 revealed that CMV drivers were charged with illegally bypassing weigh stations 2,616 times. Drivers were charged wit
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Brown, M., Martin, A., Leddy, D., & Walton, J. (2022). Investigation of Illegal Weigh Station Bypassing (Report No. KTC-23-07/SPR22-617-1F). University of Kentucky Transportation Center. https://doi.org/10.13023/ktc.rr.2023.07
Brown, Mallory, Andrew Martin, David Leddy, and Jennifer Walton. Investigation of Illegal Weigh Station Bypassing. Report no. KTC-23-07/SPR22-617-1F. University of Kentucky Transportation Center, 2022. https://doi.org/10.13023/ktc.rr.2023.07.
Brown, Mallory, et al. Investigation of Illegal Weigh Station Bypassing. University of Kentucky Transportation Center, 2022, Report no. KTC-23-07/SPR22-617-1F, ROSA P. https://doi.org/10.13023/ktc.rr.2023.07.
Nearly 10.5% of all highway bridges in the United States are classified as concrete slab bridges according to the U.S. 2020 National Bridge Inventory (NBI). Concrete slab bridges are typically single spans (20-50 feet) or multiple spans for relatively short stream crossings. The Iowa Department of Transportation (Iowa DOT) currently has three-span
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Fleming, B., & Opheim, J. (2022). Phase 1: Development of County Bridge Standards for Single Span Concrete Slab Bridges (Report No. IHRB Project TR-812). Iowa Highway Research Board. https://rosap.ntl.bts.gov/view/dot/79614
Fleming, Bradley and Joshua Opheim. Phase 1: Development of County Bridge Standards for Single Span Concrete Slab Bridges. Report no. IHRB Project TR-812. Iowa Highway Research Board, 2022. https://rosap.ntl.bts.gov/view/dot/79614.
Fleming, Bradley, and Joshua Opheim Phase 1: Development of County Bridge Standards for Single Span Concrete Slab Bridges. Iowa Highway Research Board, 2022, Report no. IHRB Project TR-812, ROSA P. https://rosap.ntl.bts.gov/view/dot/79614.
The aim of the study is to gather information on three topics: (1) the evaluation and rating of steel bridge protective coatings, (2) coating systems used by various states throughout the United States, and (3) maintenance painting procedures employed by various state department of transportation agencies (DOTs). First, it was found that most state
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Bowman, M. D., Hagan, B. D., & Hurdle, W. D. (2022). Steel Bridge Coating Evaluation and Rating Criteria (Report No. FHWA/IN/JTRP-2022/23). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317386
Bowman, Mark D., Bryan D Hagan, and William D Hurdle. Steel Bridge Coating Evaluation and Rating Criteria. Report no. FHWA/IN/JTRP-2022/23. Purdue University. Joint Transportation Research Program, 2022. https://doi.org/10.5703/1288284317386.
Bowman, Mark D., et al. Steel Bridge Coating Evaluation and Rating Criteria. Purdue University. Joint Transportation Research Program, 2022, Report no. FHWA/IN/JTRP-2022/23, ROSA P. https://doi.org/10.5703/1288284317386.
On June 25, 2021, President Biden signed Executive Order (EO) 14035, Advancing Diversity, Equity, Inclusion, and Accessibility (DEIA) in the Federal Workforce. This EO launched a whole-of-government initiative to cultivate a federal workforce that draws from the full diversity of the Nation and advances equitable employment opportunities. The EO re
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United States. Department of Transportation (2022). U.S. Department of Transportation DEIA Strategic Plan: Advancing Diversity, Equity, Inclusion, and Accessibility. United States. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/78588
United States. Department of Transportation. U.S. Department of Transportation DEIA Strategic Plan: Advancing Diversity, Equity, Inclusion, and Accessibility. United States. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/78588.
United States. Department of Transportation U.S. Department of Transportation DEIA Strategic Plan: Advancing Diversity, Equity, Inclusion, and Accessibility. United States. Department of Transportation, 2022, ROSA P. https://rosap.ntl.bts.gov/view/dot/78588.
Complete Streets is a transportation policy and design approach that requires streets to be planned, designed, operated, and maintained to enable safe, convenient, and comfortable travel and access for users of all ages and abilities regardless of their mode of transportation. While there have been multiple studies on Complete Streets in metropolit
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Fonseca-Sarmiento, C., Zeerak, R., Phinney, R., Clausen, B., Jiang, H., & Zhao, J. (2022). Assessing the Economic Effects of Context-Sensitive Main Street Highways in Small Cities (Report No. MN 2022-33). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/65462
Fonseca-Sarmiento, Camila, Raihana Zeerak, Robin Phinney, Barrett Clausen, Haiyue Jiang, and Jerry Zhao. Assessing the Economic Effects of Context-Sensitive Main Street Highways in Small Cities. Report no. MN 2022-33. Minnesota. Department of Transportation. Office of Research & Innovation, 2022. https://rosap.ntl.bts.gov/view/dot/65462.
Fonseca-Sarmiento, Camila, et al. Assessing the Economic Effects of Context-Sensitive Main Street Highways in Small Cities. Minnesota. Department of Transportation. Office of Research & Innovation, 2022, Report no. MN 2022-33, ROSA P. https://rosap.ntl.bts.gov/view/dot/65462.
Travel time reliability is a key metric of interest to practitioners and researchers because it affects travel choice and the economic competitiveness of urban areas. This research focuses on three travel time reliability metrics – buffer index, modified buffer index, and the relative width of travel time distributions. The key novel contributions
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Unnikrishnan, A., Kochar, S., & Figliozzi, M. (2022). Statistical Inference for Multimodal Travel Time Reliability (Report No. NITC-RR-1403). National Institute for Transportation and Communities (NITC). https://rosap.ntl.bts.gov/view/dot/64482
Unnikrishnan, Avinash, Subash Kochar, and Miguel Figliozzi. Statistical Inference for Multimodal Travel Time Reliability. Report no. NITC-RR-1403. National Institute for Transportation and Communities (NITC), 2022. https://rosap.ntl.bts.gov/view/dot/64482.
Unnikrishnan, Avinash, et al. Statistical Inference for Multimodal Travel Time Reliability. National Institute for Transportation and Communities (NITC), 2022, Report no. NITC-RR-1403, ROSA P. https://rosap.ntl.bts.gov/view/dot/64482.
This report describes the use of automated traffic signal performance measures for Oregon Department of Transportation. The report presents case studies of signal coordination and running yellow and red lights.
Li, X. (2022). Using Automated Traffic Signal Performance Measures To Improve Signal Timings (Report No. FHWA-OR-RD-23-05). Oregon. Dept. of Transportation. Research Section. https://rosap.ntl.bts.gov/view/dot/64469
Li, Xiugang. Using Automated Traffic Signal Performance Measures To Improve Signal Timings. Report no. FHWA-OR-RD-23-05. Oregon. Dept. of Transportation. Research Section, 2022. https://rosap.ntl.bts.gov/view/dot/64469.
Li, Xiugang Using Automated Traffic Signal Performance Measures To Improve Signal Timings. Oregon. Dept. of Transportation. Research Section, 2022, Report no. FHWA-OR-RD-23-05, ROSA P. https://rosap.ntl.bts.gov/view/dot/64469.
Freeway ramp merging involves conflict of vehicle movements that may lead to traffic bottlenecks or accidents. Thanks to advances in connected and automated vehicle (CAV) technology, a number of efficient ramp merging strategies have been developed. However, most of the existing CAV-based ramp merging strategies assume that all the vehicles are CAV
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Wu, G., Zhao, X., Liao, X., & Boriboonsomsin, K. (2022). Connectivity-Based Cooperative Ramp Merging in Multimodal and Mixed Traffic Environment (Report No. PSR-21-20). METRANS Transportation Center (Calif.). https://rosap.ntl.bts.gov/view/dot/67548
Wu, Guoyuan, Xuanpeng Zhao, Xishun Liao, and Kanok Boriboonsomsin. Connectivity-Based Cooperative Ramp Merging in Multimodal and Mixed Traffic Environment. Report no. PSR-21-20. METRANS Transportation Center (Calif.), 2022. https://rosap.ntl.bts.gov/view/dot/67548.
Wu, Guoyuan, et al. Connectivity-Based Cooperative Ramp Merging in Multimodal and Mixed Traffic Environment. METRANS Transportation Center (Calif.), 2022, Report no. PSR-21-20, ROSA P. https://rosap.ntl.bts.gov/view/dot/67548.
The asphalt industry is moving towards performance-based methods for asphalt mixture design. The Federal HighwayAdministration (FHWA) is supportive of state departments of transportations (DOT) adopting index and predictive performance tests, especially those making use of the Asphalt Mixture Performance Tester (AMPT). The FHWA is therefore encoura
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Rahbar-Rastegar, R., Huber, G., Montoya, M. A., Campbell, C., & Haddock, J. E. (2022). Demonstration Project for Asphalt Performance Engineered Mixture Design Testing (Report No. FHWA/IN/JTRP-2022/19). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317382
Rahbar-Rastegar, Reyhaneh, Gerald Huber, Miguel A. Montoya, Christopher Campbell, and John E. Haddock. Demonstration Project for Asphalt Performance Engineered Mixture Design Testing. Report no. FHWA/IN/JTRP-2022/19. Purdue University. Joint Transportation Research Program, 2022. https://doi.org/10.5703/1288284317382.
Rahbar-Rastegar, Reyhaneh, et al. Demonstration Project for Asphalt Performance Engineered Mixture Design Testing. Purdue University. Joint Transportation Research Program, 2022, Report no. FHWA/IN/JTRP-2022/19, ROSA P. https://doi.org/10.5703/1288284317382.
Transverse cracks in concrete bridge decks sometimes initiate in the early stages of the bridge service life, usually just after construction. Cracks in the bridge deck can accelerate the deterioration of the deck concrete, provide a direct pathway for the intrusion of water and chlorides to the deck reinforcement, and detract from the aesthetics.
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Phares, B. M., Liu, Z., & Alomari, A. (2022). Investigation of the Causes of Transverse Bridge Deck Cracking (Report No. InTrans Project 14-503). Iowa State University. Bridge Engineering Center. https://rosap.ntl.bts.gov/view/dot/65642
Phares, Brent M., Zhengyu Liu, and Abdalla Alomari. Investigation of the Causes of Transverse Bridge Deck Cracking. Report no. InTrans Project 14-503. Iowa State University. Bridge Engineering Center, 2022. https://rosap.ntl.bts.gov/view/dot/65642.
Phares, Brent M., et al. Investigation of the Causes of Transverse Bridge Deck Cracking. Iowa State University. Bridge Engineering Center, 2022, Report no. InTrans Project 14-503, ROSA P. https://rosap.ntl.bts.gov/view/dot/65642.
This research project examines the safety performance of unsignalized intersections on rural divided highways in Alabama. A summary of the safety problem at these intersections is provided; the concern is the relatively high frequency and severity of crashes at these locations, typically associated with vehicles entering from the minor road and fai
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Turochy, R. E., & Zhou, H. (2022). Development of Guidance for Unsignalized Intersections on Rural Multilane Divided Highways (Report No. 930-964). Auburn University. Highway Research Center. https://rosap.ntl.bts.gov/view/dot/68384
Turochy, Rod E and Huaguo Zhou. Development of Guidance for Unsignalized Intersections on Rural Multilane Divided Highways. Report no. 930-964. Auburn University. Highway Research Center, 2022. https://rosap.ntl.bts.gov/view/dot/68384.
Turochy, Rod E, and Huaguo Zhou Development of Guidance for Unsignalized Intersections on Rural Multilane Divided Highways. Auburn University. Highway Research Center, 2022, Report no. 930-964, ROSA P. https://rosap.ntl.bts.gov/view/dot/68384.
Tennessee is home to some of the most popular tourist destinations in the country and the tourism industry contributes considerably to Tennessee’s economy. The industry in the state has grown considerably in the previous years and there is a need to identify and address issues related to transportation services to accommodate needs and requirements
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Mishra, S., Golias, M. M., Dey, K. C., Thapa, D., & Ashraf, M. T. (2022). Towards Sustainable Tourism Transportation Systems and Services in Tennessee (Report No. RES2021-02). Tennessee. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/64788
Mishra, Sabyasachee, Mihalis M. Golias, Kakan Chandra Dey, Diwas Thapa, and Md. Tanvir Ashraf. Towards Sustainable Tourism Transportation Systems and Services in Tennessee. Report no. RES2021-02. Tennessee. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/64788.
Mishra, Sabyasachee, et al. Towards Sustainable Tourism Transportation Systems and Services in Tennessee. Tennessee. Department of Transportation, 2022, Report no. RES2021-02, ROSA P. https://rosap.ntl.bts.gov/view/dot/64788.
The objective of this project was to evaluate the feasibility of using roadway friction data as a key component of a winter maintenance performance management tool by the Colorado Department of Transportation (CDOT). Work accomplished to support these findings identified states and countries that are using roadway friction data in performance manag
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Fay, L., Clouser, K., & Villwock-Witte, N. (2022). Assessing the Effectiveness of Friction as a Performance Management Tool in Colorado (Report No. CDOT-2022-08). Colorado Department of Transportation. Applied Research & Innovations Branch. https://rosap.ntl.bts.gov/view/dot/64844
Fay, Laura, Karalyn Clouser, and Natalie Villwock-Witte. Assessing the Effectiveness of Friction as a Performance Management Tool in Colorado. Report no. CDOT-2022-08. Colorado Department of Transportation. Applied Research & Innovations Branch, 2022. https://rosap.ntl.bts.gov/view/dot/64844.
Fay, Laura, et al. Assessing the Effectiveness of Friction as a Performance Management Tool in Colorado. Colorado Department of Transportation. Applied Research & Innovations Branch, 2022, Report no. CDOT-2022-08, ROSA P. https://rosap.ntl.bts.gov/view/dot/64844.
In order for UHPC to be implemented in Florida structures and realize its potential benefits, research was needed to develop specifications for UHPC materials not supplied as prebagged materials. The research objective of this project was to establish mixing, placing, curing and durability requirements and test methods necessary to produce durable,
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Riding, K. A., Ferraro, C. C., Hamilton, T., Harley, J., Alrashidi, R. S., Voss, M. S., & Alabi, D. (2022). Ultra-High-Performance Concrete (UHPC) Use in Florida Structural Applications (Report No. BDV31-977-130). Florida. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/68946
Riding, Kyle A, Christopher C. Ferraro, Trey Hamilton, Joel Harley, Raid S Alrashidi, Megan S Voss, and Daniel Alabi. Ultra-High-Performance Concrete (UHPC) Use in Florida Structural Applications. Report no. BDV31-977-130. Florida. Department of Transportation, 2022. https://rosap.ntl.bts.gov/view/dot/68946.
Riding, Kyle A, et al. Ultra-High-Performance Concrete (UHPC) Use in Florida Structural Applications. Florida. Department of Transportation, 2022, Report no. BDV31-977-130, ROSA P. https://rosap.ntl.bts.gov/view/dot/68946.
This project investigated the long-term protection of steel piles with galvanized and painted galvanized coatings using a corrosion chamber to accelerate corrosion effects in the laboratory. Further investigation was completed through observation of painted galvanized piles installed in the field at a newly constructed bridge in Buchanan County, Io
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Liu, Z., Dahlberg, J., Phares, B. M., & Mousavi, S. (2022). Evaluation of Galvanized and Painted Galvanized Steel Piling (Report No. IHRB Project TR-766). Iowa State University. Bridge Engineering Center. https://rosap.ntl.bts.gov/view/dot/65660
Liu, Zhengyu, Justin Dahlberg, Brent M. Phares, and Seyedamin Mousavi. Evaluation of Galvanized and Painted Galvanized Steel Piling. Report no. IHRB Project TR-766. Iowa State University. Bridge Engineering Center, 2022. https://rosap.ntl.bts.gov/view/dot/65660.
Liu, Zhengyu, et al. Evaluation of Galvanized and Painted Galvanized Steel Piling. Iowa State University. Bridge Engineering Center, 2022, Report no. IHRB Project TR-766, ROSA P. https://rosap.ntl.bts.gov/view/dot/65660.
The goal of this project was to develop a nondestructive method, including hardware and offline data analysis, for determining in-place pile lengths.
Lamb, R., Guzina, B., & Labuz, J. (2022). Nondestructive Detection of Pile Length for High-Mast Light Towers [Technical Summary] (Report No. 2022-28). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/67170
Lamb, Rich, Bojan Guzina, and Joseph Labuz. Nondestructive Detection of Pile Length for High-Mast Light Towers [Technical Summary]. Report no. 2022-28. Minnesota. Department of Transportation. Office of Research & Innovation, 2022. https://rosap.ntl.bts.gov/view/dot/67170.
Lamb, Rich, et al. Nondestructive Detection of Pile Length for High-Mast Light Towers [Technical Summary]. Minnesota. Department of Transportation. Office of Research & Innovation, 2022, Report no. 2022-28, ROSA P. https://rosap.ntl.bts.gov/view/dot/67170.
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