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.
The intent of this project was to examine the spatiotemporal profile of incidents and suggest an initial plan for service patrol deployment for the arterials in Orlando. The study area was defined by the following boundaries: SR-434 in the north, US-17-92, I-4, US-441 in the east, SR-482 (Sand Lake Rd) in the south; and Kirkman Rd, John Young Pkwy
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Srinivasan, S., Bejleri, I., Gulhare, S., & Lee, I. J. (2021). Road Ranger Programs for Arterials. Florida. Department of Transportation. Research Center. https://rosap.ntl.bts.gov/view/dot/63539
Srinivasan, Sivaramakrishnan, Ilir Bejleri, Siddhartha Gulhare, and In Je Lee. Road Ranger Programs for Arterials. Florida. Department of Transportation. Research Center, 2021. https://rosap.ntl.bts.gov/view/dot/63539.
Srinivasan, Sivaramakrishnan, et al. Road Ranger Programs for Arterials. Florida. Department of Transportation. Research Center, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/63539.
New Jersey boasts an extensive system of public transportation that operates statewide, serving approximately two-thirds of the State’s municipalities. The many benefits of public transportation have been widely discussed and analyzed in both academic literature and popular media. This research assembled data and information and estimated numerous
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Carnegie, J. A., Deka, D., & Lubin, A. (2021). Marketing Research for the Quantifiable Benefits of Transit in New Jersey — Volume II: Final Report Technical Appendices (Report No. FHWA-NJ-2021-006). New Jersey. Department of Transportation. Bureau of Research. https://rosap.ntl.bts.gov/view/dot/61822
Carnegie, Jon A., Deva Deka, and Andrea Lubin. Marketing Research for the Quantifiable Benefits of Transit in New Jersey — Volume II: Final Report Technical Appendices. Report no. FHWA-NJ-2021-006. New Jersey. Department of Transportation. Bureau of Research, 2021. https://rosap.ntl.bts.gov/view/dot/61822.
Carnegie, Jon A., et al. Marketing Research for the Quantifiable Benefits of Transit in New Jersey — Volume II: Final Report Technical Appendices. New Jersey. Department of Transportation. Bureau of Research, 2021, Report no. FHWA-NJ-2021-006, ROSA P. https://rosap.ntl.bts.gov/view/dot/61822.
Ultra high performance concrete (UHPC) has been researched and implemented in the State of Florida for its superior structural and durability performance. Despite several successful structural level demonstrations, fiber dispersion and orientation remain a concern in the UHPC and general fiber-reinforced concrete communities. Quantifying the actual
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Zhang, Q., & Islam, M. M. (2021). Synthesis Study Quantifying the Effect of UHPC Fiber Dispersion and Orientation in Structural Members. Florida. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/73633
Zhang, Qian and Md. Mashfiqul Islam. Synthesis Study Quantifying the Effect of UHPC Fiber Dispersion and Orientation in Structural Members. Florida. Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/73633.
Zhang, Qian, and Md. Mashfiqul Islam Synthesis Study Quantifying the Effect of UHPC Fiber Dispersion and Orientation in Structural Members. Florida. Department of Transportation, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/73633.
The researchers investigated innovative tools and techniques to accelerate pavement construction. In coordination with Texas Department of Transportation (TxDOT) districts, the researchers identified four roadway projects to perform case studies using innovative tools and techniques to accelerate pavement construction. The researchers tested these
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Goehl, D. C., Scullion, T., Gurganus, C., Wilson, B., & Choi, K. (2021). Accelerating Pavement Construction Using Innovative Tools and Techniques (Report No. FHWA/TX-21/0-6985-R1, 0-6985-R1). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/60613
Goehl, Darlene C, Thomas Scullion, Charles Gurganus, Bryan Wilson, and Kunhee Choi. Accelerating Pavement Construction Using Innovative Tools and Techniques. Report no. FHWA/TX-21/0-6985-R1, 0-6985-R1. Texas A&M Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/60613.
Goehl, Darlene C, et al. Accelerating Pavement Construction Using Innovative Tools and Techniques. Texas A&M Transportation Institute, 2021, Report no. FHWA/TX-21/0-6985-R1, 0-6985-R1, ROSA P. https://rosap.ntl.bts.gov/view/dot/60613.
As all aspects of the American workplace become automated or digitally enhanced to some degree, K12 educators have an increasing responsibility to help their students acquire the technical skills necessary to organize and interpret information. Increasingly, this is done through Geographic Information Systems (GIS), especially in careers related to
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O'Brien, T., & Matsumoto, D. (2021). Mapping E-Commerce Locally and Beyond: CITT K12 Special Investigation Project (Report No. 21-24, CA-MTI-2067). Mineta Transportation Institute. https://rosap.ntl.bts.gov/view/dot/60421
O'Brien, Thomas and Deanna Matsumoto. Mapping E-Commerce Locally and Beyond: CITT K12 Special Investigation Project. Report no. 21-24, CA-MTI-2067. Mineta Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/60421.
O'Brien, Thomas, and Deanna Matsumoto Mapping E-Commerce Locally and Beyond: CITT K12 Special Investigation Project. Mineta Transportation Institute, 2021, Report no. 21-24, CA-MTI-2067, ROSA P. https://rosap.ntl.bts.gov/view/dot/60421.
New Jersey boasts an extensive system of public transportation that operates statewide, serving approximately two-thirds of the State’s municipalities. The many benefits of public transportation have been widely discussed and analyzed in both academic literature and popular media. This research assembled data and information and estimated numerous
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Carnegie, J. A., Deka, D., & Lubin, A. (2021). Marketing Research for the Quantifiable Benefits of Transit in New Jersey — Volume I: Final Report (Report No. FHWA-NJ-2021-006). New Jersey. Department of Transportation. Bureau of Research. https://rosap.ntl.bts.gov/view/dot/61821
Carnegie, Jon A., Deva Deka, and Andrea Lubin. Marketing Research for the Quantifiable Benefits of Transit in New Jersey — Volume I: Final Report. Report no. FHWA-NJ-2021-006. New Jersey. Department of Transportation. Bureau of Research, 2021. https://rosap.ntl.bts.gov/view/dot/61821.
Carnegie, Jon A., et al. Marketing Research for the Quantifiable Benefits of Transit in New Jersey — Volume I: Final Report. New Jersey. Department of Transportation. Bureau of Research, 2021, Report no. FHWA-NJ-2021-006, ROSA P. https://rosap.ntl.bts.gov/view/dot/61821.
Geogrids have been widely used in roadway construction as reinforcement in pavement foundations. Geogrids have been effective in practice for reducing rutting damage, distributing traffic loads within the pavement foundation layers, increasing the resilient modulus of the base course, and stabilizing the subgrade layer. For this project, an integra
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Supporting Files
Alimohammdi, H., Schaefer, V. R., Zheng, J., Jahren, C. T., Zheng, G., & White, D. (2021). Effectiveness of Geotextiles/Geogrids in Roadway Construction; Determine a Granular Equivalent (GE) Factor (Report No. MN 2021-26). Minnesota. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/61033
Alimohammdi, Hossein, Vernon R. Schaefer, Junxing Zheng, Charles T. Jahren, Guangfan Zheng, and David White. Effectiveness of Geotextiles/Geogrids in Roadway Construction; Determine a Granular Equivalent (GE) Factor. Report no. MN 2021-26. Minnesota. Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/61033.
Alimohammdi, Hossein, et al. Effectiveness of Geotextiles/Geogrids in Roadway Construction; Determine a Granular Equivalent (GE) Factor. Minnesota. Department of Transportation, 2021, Report no. MN 2021-26, ROSA P. https://rosap.ntl.bts.gov/view/dot/61033.
California local agencies raise the revenue to support high-quality transportation services and infrastructure from a patchwork of federal, state, and local sources. To assist policymakers and transportation experts as they explore options for creating a more sustainable funding system, this report presents an overview of the taxes and fees that cu
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Agrawal, A. W., Lee, K. Y., & Alexander, S. (2021). How Do California’s Local Governments Fund Surface Transportation? A Guide to Revenue Sources (Report No. 21-32). Mineta Transportation Institute. https://doi.org/10.31979/mti.2021.1938A
Agrawal, Asha Weinstein, Kevin Yong Lee, and Serena Alexander. How Do California’s Local Governments Fund Surface Transportation? A Guide to Revenue Sources. Report no. 21-32. Mineta Transportation Institute, 2021. https://doi.org/10.31979/mti.2021.1938A.
Agrawal, Asha Weinstein, et al. How Do California’s Local Governments Fund Surface Transportation? A Guide to Revenue Sources. Mineta Transportation Institute, 2021, Report no. 21-32, ROSA P. https://doi.org/10.31979/mti.2021.1938A.
Historically, the State of California assessed the environmental impacts of proposed developments based on how it was projected to affect an area’s level of service (LOS). However, as LOS focused on traffic delays, many agencies simply widened roads, which was an ineffective way to reduce greenhouse gas emissions (GHGs). With the passage of Senate
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Alexander, S. E., Alfonzo, M., & Lee, K. (2021). Safeguarding Equity in Off-Site Vehicle Miles Traveled (VMT) Mitigation in California (Report No. 21-30). Mineta Transportation Institute. https://rosap.ntl.bts.gov/view/dot/60040
Alexander, Serena E, Mariela Alfonzo, and Kevin Lee. Safeguarding Equity in Off-Site Vehicle Miles Traveled (VMT) Mitigation in California. Report no. 21-30. Mineta Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/60040.
Alexander, Serena E, et al. Safeguarding Equity in Off-Site Vehicle Miles Traveled (VMT) Mitigation in California. Mineta Transportation Institute, 2021, Report no. 21-30, ROSA P. https://rosap.ntl.bts.gov/view/dot/60040.
Kentucky established its Extended Weight Coal or Coal By-products Haul Road System (EWCHRS) to increase the state’s competitiveness within the coal industry and reduce financial burdens on coal haulers. A new extended-weight haul system for unrefined petroleum products will come online in 2022. To facilitate enforcement of weight limits throughout
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Marks, P. G., Wilcoxson, J., Gibson, B., Van Dyke, C., Walton, J., Kreis, D., & Martin, A. (2021). A Review of Kentucky’s Extended-Weight Hauling Programs (Report No. KTC-21-22/SPR20-589-1F). University of Kentucky Transportation Center. https://doi.org/10.13023/ktc.rr.2021.22
Marks, P Gayle, Jon Wilcoxson, Bryan Gibson, Chris Van Dyke, Jennifer Walton, Doug Kreis, and Andrew Martin. A Review of Kentucky’s Extended-Weight Hauling Programs. Report no. KTC-21-22/SPR20-589-1F. University of Kentucky Transportation Center, 2021. https://doi.org/10.13023/ktc.rr.2021.22.
Marks, P Gayle, et al. A Review of Kentucky’s Extended-Weight Hauling Programs. University of Kentucky Transportation Center, 2021, Report no. KTC-21-22/SPR20-589-1F, ROSA P. https://doi.org/10.13023/ktc.rr.2021.22.
Few studies have examined the impact of advanced driver-assistance systems (ADAS) on police officers to improve driver safety and prevent crashes. This is in spite of police officers having higher driving-related mortality rates than average civilians. To fill this gap, a survey study was conducted on 73 police officers to assess their opinions on
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Wozniak, D., Shahini, F., Nasr, V., & Zahabi, M. (2021). Analysis of Advanced Driver Assistance Systems in Police Vehicles: A Survey Study. Texas A&M University. Industrial and Systems Engineering Department. https://rosap.ntl.bts.gov/view/dot/60347
Wozniak, David, Farzaneh Shahini, Vanessa Nasr, and Maryam Zahabi. Analysis of Advanced Driver Assistance Systems in Police Vehicles: A Survey Study. Texas A&M University. Industrial and Systems Engineering Department, 2021. https://rosap.ntl.bts.gov/view/dot/60347.
Wozniak, David, et al. Analysis of Advanced Driver Assistance Systems in Police Vehicles: A Survey Study. Texas A&M University. Industrial and Systems Engineering Department, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/60347.
TxDOT keeps records of contracted roadway projects in several databases: materials and test records, collected for the quality control / quality assurance program, in the SiteManager (SMGR) database; construction-related information in the Design and Construction Information System (DCIS); and performance measures in the Pavement Analyst (PA) datab
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Rahman, S., Sun, J., Bhasin, A., & Zhang, Z. (2021). Capitalizing on Construction Records to Identify Relationships between Construction and Long-term Project Performance: Final Report (Report No. FHWA/TX-22/0-7028-1). Texas Department of Transportation. Research and Technology Implementation Office. https://rosap.ntl.bts.gov/view/dot/64842
Rahman, Syeda, Jingran Sun, Amit Bhasin, and Zhanmin Zhang. Capitalizing on Construction Records to Identify Relationships between Construction and Long-term Project Performance: Final Report. Report no. FHWA/TX-22/0-7028-1. Texas Department of Transportation. Research and Technology Implementation Office, 2021. https://rosap.ntl.bts.gov/view/dot/64842.
Rahman, Syeda, et al. Capitalizing on Construction Records to Identify Relationships between Construction and Long-term Project Performance: Final Report. Texas Department of Transportation. Research and Technology Implementation Office, 2021, Report no. FHWA/TX-22/0-7028-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/64842.
From March 2020 through March 2021, researchers monitored three San Francisco Bay Area transit agencies: two large – Alameda-Contra Costa Transit District (AC Transit), Valley Transportation Authority (VTA); and one small – Tri Delta Transit. As the lockdown was imposed in response to the COVID-19 pandemic, white-collar commuters, students, and the
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Kurzhanskiy, A. A., & Lapardhaja, S. (2021). Bus Operations of Three San Francisco Bay Area Transit Agencies during the First Year of the COVID-19 Pandemic (Report No. UC-ITS-2021-28). University of California Institute of Transportation Studies. http://doi.org/10.7922/G29G5K36
Kurzhanskiy, Alex A. and Servet Lapardhaja. Bus Operations of Three San Francisco Bay Area Transit Agencies during the First Year of the COVID-19 Pandemic. Report no. UC-ITS-2021-28. University of California Institute of Transportation Studies, 2021. http://doi.org/10.7922/G29G5K36.
Kurzhanskiy, Alex A., and Servet Lapardhaja Bus Operations of Three San Francisco Bay Area Transit Agencies during the First Year of the COVID-19 Pandemic. University of California Institute of Transportation Studies, 2021, Report no. UC-ITS-2021-28, ROSA P. http://doi.org/10.7922/G29G5K36.
The focus of this project has been on addressing some remaining obstacles to the general deployment of PedPal, a smartphone app that assists pedestrians with disabilities in safely crossing signalized intersections. Specifically, work has centered mainly on the design and development of two new capabilities: (1) an approach to localization that is
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Smith, S. F., & Rubinstein, Z. B. (2021). Safe Intersection Crossing for Pedestrians With Disabilities (Report No. Mobility21 Project # 40459.14.1080376). Mobility21, Carnegie Mellon University. https://rosap.ntl.bts.gov/view/dot/59230
Smith, Stephen F. and Zachary B. Rubinstein. Safe Intersection Crossing for Pedestrians With Disabilities. Report no. Mobility21 Project # 40459.14.1080376. Mobility21, Carnegie Mellon University, 2021. https://rosap.ntl.bts.gov/view/dot/59230.
Smith, Stephen F., and Zachary B. Rubinstein Safe Intersection Crossing for Pedestrians With Disabilities. Mobility21, Carnegie Mellon University, 2021, Report no. Mobility21 Project # 40459.14.1080376, ROSA P. https://rosap.ntl.bts.gov/view/dot/59230.
Load rating of bridges before 1994 was primarily conducted by Load Factor Rating (LFR). In 1994, the American Association of State Highway and Transportation Officials (AASHTO) developed and encouraged the use of a probabilistic-based method titled Load and Resistance Factor Design (LRFD) for carrying out bridge design. A new methodology consistent
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Khanna, P., & Bowman, M. D. (2021). Use of LRFR Methodology for Load Rating of INDOT Steel Bridges (Report No. FHWA/IN/JTRP-2021/37). Purdue University. Joint Transportation Research Program. https://rosap.ntl.bts.gov/view/dot/62430
Khanna, Prekshi and Mark D. Bowman. Use of LRFR Methodology for Load Rating of INDOT Steel Bridges. Report no. FHWA/IN/JTRP-2021/37. Purdue University. Joint Transportation Research Program, 2021. https://rosap.ntl.bts.gov/view/dot/62430.
Khanna, Prekshi, and Mark D. Bowman Use of LRFR Methodology for Load Rating of INDOT Steel Bridges. Purdue University. Joint Transportation Research Program, 2021, Report no. FHWA/IN/JTRP-2021/37, ROSA P. https://rosap.ntl.bts.gov/view/dot/62430.
The design of pile foundations to resist lateral loads is essential in offshore structures and bridge foundations. The lateral behavior of piles has been studied in the past by experimental investigations coupled with analytical and numerical methods. The problem is complex due to the nonlinearities from soil behavior, gap formation, and pile-soil-
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Abu-Farsakh, M. Y., Souri, A., & Amirmojahedi, M. (2021). Finite Element Analysis of the Lateral Load Test on Battered Pile Group at I-10 Twin Span Bridge (Report No. FHWA/LA.17/651). Louisiana. Department of Transportation and Development. https://rosap.ntl.bts.gov/view/dot/61209
Abu-Farsakh, Murad Y., Ahmad Souri, and Mohsen Amirmojahedi. Finite Element Analysis of the Lateral Load Test on Battered Pile Group at I-10 Twin Span Bridge. Report no. FHWA/LA.17/651. Louisiana. Department of Transportation and Development, 2021. https://rosap.ntl.bts.gov/view/dot/61209.
Abu-Farsakh, Murad Y., et al. Finite Element Analysis of the Lateral Load Test on Battered Pile Group at I-10 Twin Span Bridge. Louisiana. Department of Transportation and Development, 2021, Report no. FHWA/LA.17/651, ROSA P. https://rosap.ntl.bts.gov/view/dot/61209.
Most of the structural elements on Kentucky bridges are made of reinforced concrete. Many of these elements deteriorate as a result of corrosion of the reinforcing steel caused by carbonation and — primarily — applications of chlorides by the Kentucky Transportation Cabinet (KYTC). Corrosion of reinforcing steel is reviewed along with assessment pr
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Hopwood, T., Goff, C., & Palle, S. (2021). Assessment of Deteriorated Structural Concrete To Provide Durable Repairs (Report No. KTC-21-32/SPR15-505-1F). University of Kentucky Transportation Center. https://doi.org/10.13023/ktc.rr.2021.32
Hopwood, Theodore, Christopher Goff, and Sudhir Palle. Assessment of Deteriorated Structural Concrete To Provide Durable Repairs. Report no. KTC-21-32/SPR15-505-1F. University of Kentucky Transportation Center, 2021. https://doi.org/10.13023/ktc.rr.2021.32.
Hopwood, Theodore, et al. Assessment of Deteriorated Structural Concrete To Provide Durable Repairs. University of Kentucky Transportation Center, 2021, Report no. KTC-21-32/SPR15-505-1F, ROSA P. https://doi.org/10.13023/ktc.rr.2021.32.
The rise of ridesourcing services such as Uber and Lyft in recent years has revolutionized urban transportation across the globe. With the increased popularity of these services came negative impacts on industries such as taxi cab and public transit services. In an era when ridesourcing companies are expanding rapidly in previously untouched market
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Vachal, K. (2021). Ridesourcing in Rural Communities, North Dakota Driver Survey (Report No. MPC-628). Mountain-Plains Consortium. https://rosap.ntl.bts.gov/view/dot/59237
Vachal, Kimberly. Ridesourcing in Rural Communities, North Dakota Driver Survey. Report no. MPC-628. Mountain-Plains Consortium, 2021. https://rosap.ntl.bts.gov/view/dot/59237.
Vachal, Kimberly Ridesourcing in Rural Communities, North Dakota Driver Survey. Mountain-Plains Consortium, 2021, Report no. MPC-628, ROSA P. https://rosap.ntl.bts.gov/view/dot/59237.
Seismic methods are often used for detection of pre-collapsed sinkholes (voids) under roadway for remediation to minimize the risk to the safety of the traveling public. While the active-source seismic methods can provide accurate subsurface profiles, they require closing the traffic flow for hours during testing and potentially cause sinkhole coll
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Tran, K., Wang, Y., Khorrami, M., & Chen, R. (2021). In-Service Assessment of Road Sinkholes With 2D Ambient Noise Tomography. Florida. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/63092
Tran, Khiem, Yao Wang, Mohammad Khorrami, and Ruoyun Chen. In-Service Assessment of Road Sinkholes With 2D Ambient Noise Tomography. Florida. Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/63092.
Tran, Khiem, et al. In-Service Assessment of Road Sinkholes With 2D Ambient Noise Tomography. Florida. Department of Transportation, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/63092.
Culverts at road-stream crossings can create barriers to movement within a stream network that can have dramatic consequences for fish populations by fragmenting habitat. Culverts can become barriers when flow conditions exceed fish swimming ability, e.g., for drop at the outlet and insufficient depth or excess flow velocity. In this project, we us
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Kozarek, J., Herb, W., & Bentelspacher, N. (2021). Assessing Culverts in Minnesota: Fish Passage and Storm Vulnerability (Report No. MN 2021-29). Minnesota. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/61032
Kozarek, Jessica, William Herb, and Nick Bentelspacher. Assessing Culverts in Minnesota: Fish Passage and Storm Vulnerability. Report no. MN 2021-29. Minnesota. Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/61032.
Kozarek, Jessica, et al. Assessing Culverts in Minnesota: Fish Passage and Storm Vulnerability. Minnesota. Department of Transportation, 2021, Report no. MN 2021-29, ROSA P. https://rosap.ntl.bts.gov/view/dot/61032.
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