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 communication between roadside units (RSUs) and onboard units (OBUs) using dedicated short range communication (DSRC) was implemented across 22 intersections on Mahan corridor in the City of Tallahassee with the aim of broadcasting signal phasing and timing (SPaT) and intersection map (MAP) information to OBU-equipped vehicles. The overall goal
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Moses, R. (2021). Evaluation of Connected Vehicle Applications on Mahan Corridor, Phase I. Florida. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/64132
Moses, Ren. Evaluation of Connected Vehicle Applications on Mahan Corridor, Phase I. Florida. Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/64132.
Moses, Ren Evaluation of Connected Vehicle Applications on Mahan Corridor, Phase I. Florida. Department of Transportation, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/64132.
An integrated critical information delivery platform for smart segment dissemination to road users was developed. A statewide baseline milepost geodatabase was created at 0.1-mile resolution with tools, protocols, and interfaces that allow other data sources to be efficiently utilized. A variety of data sources (e.g., INRIX, CARS, Doppler, camera i
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Li, L., Chen, Y., Tian, R., Li, F., Li, H., & Sturdevant, J. R. (2021). An Integrated Critical Information Delivery Platform for Smart Segment Dissemination to Road Users (Report No. FHWA/IN/JTRP-2021/34). Purdue University. Joint Transportation Research Program. https://doi.org/10.5703/1288284317440
Li, Lingxi, Yaobin Chen, Renran Tian, Feng Li, Howell Li, and James R. Sturdevant. An Integrated Critical Information Delivery Platform for Smart Segment Dissemination to Road Users. Report no. FHWA/IN/JTRP-2021/34. Purdue University. Joint Transportation Research Program, 2021. https://doi.org/10.5703/1288284317440.
Li, Lingxi, et al. An Integrated Critical Information Delivery Platform for Smart Segment Dissemination to Road Users. Purdue University. Joint Transportation Research Program, 2021, Report no. FHWA/IN/JTRP-2021/34, ROSA P. https://doi.org/10.5703/1288284317440.
Increasing recycled material content in asphalt mixtures provides economic and environmental benefits, but each unique material combination of virgin and recycled materials and additives must be engineered to ensure adequate performance with proper selection of component materials and balanced proportioning, as well as consideration of recycled bin
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Martin, A. E., Arambula-Mercado, E., & Abdelaziz, A. (2021). Binder Availability in Recycled Materials: Review of Literature and Available Quantification Methods (Report No. FHWA/TX-21/0-7062-R1B). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/59222
Martin, Amy Epps, Edith Arambula-Mercado, and Amal Abdelaziz. Binder Availability in Recycled Materials: Review of Literature and Available Quantification Methods. Report no. FHWA/TX-21/0-7062-R1B. Texas A&M Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/59222.
Martin, Amy Epps, et al. Binder Availability in Recycled Materials: Review of Literature and Available Quantification Methods. Texas A&M Transportation Institute, 2021, Report no. FHWA/TX-21/0-7062-R1B, ROSA P. https://rosap.ntl.bts.gov/view/dot/59222.
With the growing need for maintenance or reconstruction of existing infrastructure and the construction of new infrastructure, work zone (WZ) setup and management are important for the safe and efficient movement of road users and protection of construction workers and personnel. Applications of Smart Work Zone (SWZ) systems, which are efficient in
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Lin, P. S., Islam, M. B., Wang, Z., Rangaswamy, R., Kolla, R., & Bialkowska-Jelinska, E. (2021). Prioritized Safety Consideration by Work Zone Types and Pilot Implementation. Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/62741
Lin, Pei-Sung, Mouyid Bin Islam, Zhenyu Wang, Rakesh Rangaswamy, Rama Kolla, and Elzbieta Bialkowska-Jelinska. Prioritized Safety Consideration by Work Zone Types and Pilot Implementation. Florida Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/62741.
Lin, Pei-Sung, et al. Prioritized Safety Consideration by Work Zone Types and Pilot Implementation. Florida Department of Transportation, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/62741.
AASHTO’s Mechanistic Empirical Pavement Design Guide (MEPDG) and AASHTOWare Pavement ME Design software (hereinafter “Pavement ME Design”) provide an improved process for conducting pavement analysis and for developing pavement designs based on mechanistic-empirical principles. The Virginia Department of Transportation (VDOT) officially adopted the
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Nair, H., & Saha, B. (2021). Determination of Input Data for Stone Matrix Asphalt and Polymer Modified Dense-Graded Mixtures for Use in the Mechanistic-Empirical Pavement Design Guide (Report No. FHWA/VTRC 22-R8). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/58729
Nair, Harikrishnan and Bipad Saha. Determination of Input Data for Stone Matrix Asphalt and Polymer Modified Dense-Graded Mixtures for Use in the Mechanistic-Empirical Pavement Design Guide. Report no. FHWA/VTRC 22-R8. Virginia Transportation Research Council (VTRC), 2021. https://rosap.ntl.bts.gov/view/dot/58729.
Nair, Harikrishnan, and Bipad Saha Determination of Input Data for Stone Matrix Asphalt and Polymer Modified Dense-Graded Mixtures for Use in the Mechanistic-Empirical Pavement Design Guide. Virginia Transportation Research Council (VTRC), 2021, Report no. FHWA/VTRC 22-R8, ROSA P. https://rosap.ntl.bts.gov/view/dot/58729.
Academic literature has scant research on sidewalks, and some cities are lacking information to rectify an unprecedented backlog of deteriorating pedestrian infrastructure. A lack of data stymies efforts to understand sidewalks, how they may impact equity, and how cities can prioritize where to begin to rectify these issues. Remote sensing data are
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Coppola, N., Marshall, W. E., & Janson, B. (2021). Where the Sidewalks End: Evaluating Pedestrian Infrastructure and Equality (Report No. MPC-579). Mountain-Plains Consortium. https://rosap.ntl.bts.gov/view/dot/60351
Coppola, Nicholas, Wesley E. Marshall, and Bruce Janson. Where the Sidewalks End: Evaluating Pedestrian Infrastructure and Equality. Report no. MPC-579. Mountain-Plains Consortium, 2021. https://rosap.ntl.bts.gov/view/dot/60351.
Coppola, Nicholas, et al. Where the Sidewalks End: Evaluating Pedestrian Infrastructure and Equality. Mountain-Plains Consortium, 2021, Report no. MPC-579, ROSA P. https://rosap.ntl.bts.gov/view/dot/60351.
The road history projects undertaken by the Virginia Transportation Research Council establish the feasibility of studies of early road networks and their use in the environmental review process. These projects, by gathering and publishing the early road orders of the vast parent counties and other significant areas, also lay the foundation for add
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Miller, A. B. (2021). Fauquier County Road Orders 1784–1800 (Report No. FHWA/VTRC 22-R10). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/58739
Miller, Ann Brush. Fauquier County Road Orders 1784–1800. Report no. FHWA/VTRC 22-R10. Virginia Transportation Research Council (VTRC), 2021. https://rosap.ntl.bts.gov/view/dot/58739.
Miller, Ann Brush Fauquier County Road Orders 1784–1800. Virginia Transportation Research Council (VTRC), 2021, Report no. FHWA/VTRC 22-R10, ROSA P. https://rosap.ntl.bts.gov/view/dot/58739.
The Texas Department of Transportation (TxDOT) has a strategic interest in using unmanned aircraft systems (UASs) to support a variety of initiatives, including traffic incident management. TxDOT is interested in identifying and documenting UAS uses to determine to what degree UASs can be used to streamline the process to clear and document fatal c
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Quiroga, C., Starek, M. J., Maldonado, J., Kraus, E., Taylor, S., Ham, Y., & Chu, T. (2021). Using Unmanned Aircraft Systems for Crash Reconstructions During Suboptimal Conditions (Report No. FHWA/TX-21/0-7063-R1). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/62467
Quiroga, Cesar, Michael J. Starek, Jorge Maldonado, Edgar Kraus, Stanton Taylor, Youngjib Ham, and Tianxing Chu. Using Unmanned Aircraft Systems for Crash Reconstructions During Suboptimal Conditions. Report no. FHWA/TX-21/0-7063-R1. Texas A&M Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/62467.
Quiroga, Cesar, et al. Using Unmanned Aircraft Systems for Crash Reconstructions During Suboptimal Conditions. Texas A&M Transportation Institute, 2021, Report no. FHWA/TX-21/0-7063-R1, ROSA P. https://rosap.ntl.bts.gov/view/dot/62467.
This report documents the efforts and results of a one-year research project aimed at improving temporary guide signs in long-term work zones. The researchers held discussions with Texas Department of Transportation personnel to gather information about their experiences with temporary guide signs in work zones. The researchers also performed posit
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Theiss, L., Higgins, L., & Ullman, G. L. (2021). Studies To Improve Temporary Guide Signs in Work Zones (Report No. FHWA/TX-21/0-7046-R1). Texas A&M Transportation Institute. https://rosap.ntl.bts.gov/view/dot/59250
Theiss, LuAnn, Laura Higgins, and Gerald L. Ullman. Studies To Improve Temporary Guide Signs in Work Zones. Report no. FHWA/TX-21/0-7046-R1. Texas A&M Transportation Institute, 2021. https://rosap.ntl.bts.gov/view/dot/59250.
Theiss, LuAnn, et al. Studies To Improve Temporary Guide Signs in Work Zones. Texas A&M Transportation Institute, 2021, Report no. FHWA/TX-21/0-7046-R1, ROSA P. https://rosap.ntl.bts.gov/view/dot/59250.
The goal of this study was to determine the angularity and roundness of particles for use in fine aggregate for Portland Concrete. To develop a new test method for evaluation of fine aggregate in Portland Cement concrete, an instrument called the “Camsizer P4” was used for fine-particle size and shape analyses. This instrument uses advanced image a
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Dawson, M. R. (2021). Evaluation of the Retsch Technology Camsizer P4 To Assess the Shape of Crushed Particles Proposed to Be Added to Natural Sand Fine Aggregate Used in Portland Cement Concrete (Report No. SP&R 20-SPR1-001). Iowa Department of Transportation. https://rosap.ntl.bts.gov/view/dot/73656
Dawson, M. Robert. Evaluation of the Retsch Technology Camsizer P4 To Assess the Shape of Crushed Particles Proposed to Be Added to Natural Sand Fine Aggregate Used in Portland Cement Concrete. Report no. SP&R 20-SPR1-001. Iowa Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/73656.
Dawson, M. Robert Evaluation of the Retsch Technology Camsizer P4 To Assess the Shape of Crushed Particles Proposed to Be Added to Natural Sand Fine Aggregate Used in Portland Cement Concrete. Iowa Department of Transportation, 2021, Report no. SP&R 20-SPR1-001, ROSA P. https://rosap.ntl.bts.gov/view/dot/73656.
The overall goal of this project was to evaluate the efficacy of dedicated short-range communications (DSRC) in improving efficiency and safety within a network of signalized intersections. In this report, we describe the data collection, processing, and analysis mechanisms for traffic state data collected from the Gainesville Trapezium, a set of h
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Banerjee, T., Manjunatha, P., Uddin, M. S., Kibet, L., Sengupta, R., Ranka, S., & Elefteriadou, L. (2021). Data Analytics and Evaluation of the Gainesville Trapezium Connected Vehicle Signal Phasing and Timing (SPaT) Deployment Project. Florida Department of Transportation. https://rosap.ntl.bts.gov/view/dot/62708
Banerjee, Tania, Pruthvi Manjunatha, Muhammad Saif Uddin, Leonida Kibet, Rahul Sengupta, Sanjay Ranka, and Lily Elefteriadou. Data Analytics and Evaluation of the Gainesville Trapezium Connected Vehicle Signal Phasing and Timing (SPaT) Deployment Project. Florida Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/62708.
Banerjee, Tania, et al. Data Analytics and Evaluation of the Gainesville Trapezium Connected Vehicle Signal Phasing and Timing (SPaT) Deployment Project. Florida Department of Transportation, 2021, ROSA P. https://rosap.ntl.bts.gov/view/dot/62708.
The Connected Vehicle Pilot project was deployed on Interstate 80 corridor in Wyoming with the goal of promoting safety and mobility for road users with a focus on commercial vehicles, Highway patrol, and winter maintenance vehicles. One of the key components of the Wyoming department of transportation (WYDOT) CV pilot is the Human Machine Interfac
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Ahmed, M., Gaweesh, S., Subedi, B., Raddaoui, O., & Yang, G. (2021). Human Machine Interface for Connected Vehicle: Requirements, Development and Assessment (Report No. WY2104F). Wyoming. Department of Transportation. https://rosap.ntl.bts.gov/view/dot/63392
Ahmed, Mohamed, Sherif Gaweesh, Biraj Subedi, Omar Raddaoui, and Guangchuan Yang. Human Machine Interface for Connected Vehicle: Requirements, Development and Assessment. Report no. WY2104F. Wyoming. Department of Transportation, 2021. https://rosap.ntl.bts.gov/view/dot/63392.
Ahmed, Mohamed, et al. Human Machine Interface for Connected Vehicle: Requirements, Development and Assessment. Wyoming. Department of Transportation, 2021, Report no. WY2104F, ROSA P. https://rosap.ntl.bts.gov/view/dot/63392.
The primary objective of this research was to construct, demonstrate, and monitor a full-scale field implementation of the largest-to-date operational, electrically conductive concrete (ECON) heated pavement system (HPS) using different electrode configurations. The goals of the project included the following: • Develop a cost-effective methodology
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Ceylan, H., Kim, S., Taylor, P., Mina, M., Malakooti, A., Sadati, S., & Theh, W. S. (2021). Self-Heating Electrically Conductive Concrete Demonstration Project [Tech Transfer Summary] (Report No. IHRB Project TR-724;InTrans Project 17-610). Iowa Highway Research Board. https://rosap.ntl.bts.gov/view/dot/79682
Ceylan, Halil, Sunghwan Kim, Peter Taylor, Mani Mina, Amir Malakooti, Sajed Sadati, and Wei Shen Theh. Self-Heating Electrically Conductive Concrete Demonstration Project [Tech Transfer Summary]. Report no. IHRB Project TR-724;InTrans Project 17-610. Iowa Highway Research Board, 2021. https://rosap.ntl.bts.gov/view/dot/79682.
Ceylan, Halil, et al. Self-Heating Electrically Conductive Concrete Demonstration Project [Tech Transfer Summary]. Iowa Highway Research Board, 2021, Report no. IHRB Project TR-724;InTrans Project 17-610, ROSA P. https://rosap.ntl.bts.gov/view/dot/79682.
The Minnesota Department of Transportation (MnDOT) funded two projects in an effort to mitigate anchor bolt connection loosening and develop improved pre-tensioning steps for its sign, luminaire, and traffic signal (SLTS) structures. The Phase I study proposed new pre-tensioning procedures, completed laboratory testing, did an in-depth literature r
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Dietrich, Z., Phares, B. M., & Liu, Z. (2021). Re-Tightening the Large Anchor Bolts of Support Structures for Signs and Luminaires: Phase II (Report No. MN 2021-23). Minnesota. Department of Transportation. Office of Research & Innovation. https://rosap.ntl.bts.gov/view/dot/64849
Dietrich, Zachary, Brent M. Phares, and Zhengyu Liu. Re-Tightening the Large Anchor Bolts of Support Structures for Signs and Luminaires: Phase II. Report no. MN 2021-23. Minnesota. Department of Transportation. Office of Research & Innovation, 2021. https://rosap.ntl.bts.gov/view/dot/64849.
Dietrich, Zachary, et al. Re-Tightening the Large Anchor Bolts of Support Structures for Signs and Luminaires: Phase II. Minnesota. Department of Transportation. Office of Research & Innovation, 2021, Report no. MN 2021-23, ROSA P. https://rosap.ntl.bts.gov/view/dot/64849.
DOTs and other transportation agencies are increasingly using automated methods for snowplow route optimization, which have been demonstrated to produce significant savings when they result in the implementation of new routes. However, many route optimization projects have fallen short of implementation due to technical/operational issues with the
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Dowds, J., & Sullivan, J. (2021). Synthesis of Technical Requirements and Considerations for Automated Snowplow Route Optimization (Report No. CR 19-04). Minnesota. Department of Transportation. Research Services & Library. https://rosap.ntl.bts.gov/view/dot/63224
Dowds, Jonathan and James Sullivan. Synthesis of Technical Requirements and Considerations for Automated Snowplow Route Optimization. Report no. CR 19-04. Minnesota. Department of Transportation. Research Services & Library, 2021. https://rosap.ntl.bts.gov/view/dot/63224.
Dowds, Jonathan, and James Sullivan Synthesis of Technical Requirements and Considerations for Automated Snowplow Route Optimization. Minnesota. Department of Transportation. Research Services & Library, 2021, Report no. CR 19-04, ROSA P. https://rosap.ntl.bts.gov/view/dot/63224.
Many transportation agencies allocate significant time and resources each year to remove ice and snow from their paved surfaces to achieve a safe, accessible, and operational transportation network. An electrically conductive concrete (ECON) heated pavement system (HPS) has been shown to be a promising alternative to conventional snow removal opera
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Supporting Files
Malakooti, A., Sadati, S., Ceylan, H., Kim, S., Cetin, K. S., Taylor, P. C., Mina, M., Cetin, B., & Theh, W. S. (2021). Self-Heating Electrically Conductive Concrete Demonstration Project (Report No. IHRB Project TR-724;InTrans Project 17-610). Iowa Highway Research Board. https://rosap.ntl.bts.gov/view/dot/79672
Malakooti, Amir, Sajed Sadati, Halil Ceylan, Sunghwan Kim, Kristen Sara Cetin, Peter C. Taylor, Mani Mina, Bora Cetin, and Wei Shen Theh. Self-Heating Electrically Conductive Concrete Demonstration Project. Report no. IHRB Project TR-724;InTrans Project 17-610. Iowa Highway Research Board, 2021. https://rosap.ntl.bts.gov/view/dot/79672.
Malakooti, Amir, et al. Self-Heating Electrically Conductive Concrete Demonstration Project. Iowa Highway Research Board, 2021, Report no. IHRB Project TR-724;InTrans Project 17-610, ROSA P. https://rosap.ntl.bts.gov/view/dot/79672.
Despite the early adoption of Graduated Driver Licensing (GDL) program, teens and young adults in Louisiana continued to experience crashes at higher rates and thereby considered as high-risk drivers. The aim of this study was to analyze young driver crash contributing factors and evaluate the Louisiana’s GDL program. Based on a comprehensive liter
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Mitran, E., Sun, X., Rahman, M. A., & Hossain, M. M. (2021). Young Driver Crashes in Louisiana: Understanding the Contributing Factors to Decrease the Numbers (Report No. FHWA/LA.17/654). Louisiana Transportation Research Center. https://rosap.ntl.bts.gov/view/dot/60538
Mitran, Elisabeta, Xiaoduan Sun, M Ashifur Rahman, and Md Mahmud Hossain. Young Driver Crashes in Louisiana: Understanding the Contributing Factors to Decrease the Numbers. Report no. FHWA/LA.17/654. Louisiana Transportation Research Center, 2021. https://rosap.ntl.bts.gov/view/dot/60538.
Mitran, Elisabeta, et al. Young Driver Crashes in Louisiana: Understanding the Contributing Factors to Decrease the Numbers. Louisiana Transportation Research Center, 2021, Report no. FHWA/LA.17/654, ROSA P. https://rosap.ntl.bts.gov/view/dot/60538.
Design-build project delivery has been embraced across several states and local agencies for large and small public transportation projects. This delivery method has also been used extensively in the construction of privately owned and operated hangars to accelerate schedule and reduce construction cost. The State of Missouri launched this research
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Goldstein, G., Hoffman, R., Patterson, N., & Schwab, P. (2021). Design-Build Evaluation for General Aviation Hangars in Missouri (Report No. cmr 21-008). Missouri. Department of Transportation. Construction and Materials Division. https://rosap.ntl.bts.gov/view/dot/60863
Goldstein, Glenn, Richard Hoffman, Nicholas Patterson, and Philip Schwab. Design-Build Evaluation for General Aviation Hangars in Missouri. Report no. cmr 21-008. Missouri. Department of Transportation. Construction and Materials Division, 2021. https://rosap.ntl.bts.gov/view/dot/60863.
Goldstein, Glenn, et al. Design-Build Evaluation for General Aviation Hangars in Missouri. Missouri. Department of Transportation. Construction and Materials Division, 2021, Report no. cmr 21-008, ROSA P. https://rosap.ntl.bts.gov/view/dot/60863.
In the context of connected vehicles, the focus of safety applications has mainly been on accident avoidance of motor vehicles, and little attention has been given to the safety of other traffic participants like bicycles, wheelchair operators, or visually impaired persons. This research first presents a bicycle safety application for connected veh
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Baqer, M., Krings, A., Lowry, M., & Abdel-Rahim, A. (2021). Connected Vehicle Safety Applications Using V2X Under Consideration of Bicycles, Pedestrians and Persons With Special Needs (Report No. 2019-S-UI-1). Pacific Northwest Transportation Consortium (PacTrans) (UTC). https://rosap.ntl.bts.gov/view/dot/58697
Baqer, Mohammad, Axel Krings, Michael Lowry, and Ahmed Abdel-Rahim. Connected Vehicle Safety Applications Using V2X Under Consideration of Bicycles, Pedestrians and Persons With Special Needs. Report no. 2019-S-UI-1. Pacific Northwest Transportation Consortium (PacTrans) (UTC), 2021. https://rosap.ntl.bts.gov/view/dot/58697.
Baqer, Mohammad, et al. Connected Vehicle Safety Applications Using V2X Under Consideration of Bicycles, Pedestrians and Persons With Special Needs. Pacific Northwest Transportation Consortium (PacTrans) (UTC), 2021, Report no. 2019-S-UI-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/58697.
In this report, three methods were selected to estimate WMT evasion rates for 2016-2018: 1) comparison of commercial truck screening data to WMT tax returns, 2) comparison of IRP registration filings to WMT tax returns, and 3) comparison of IFTA filings to WMT tax returns. Comparison of taxable miles calculated using commercial truck screening data
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Martin, A., Koo, J., Walton, J., Van Dyke, C., Bell, M., & Tipton, J. (2021). Measuring the Rates of Weight-Mile Tax Evasion in Oregon (Report No. OR-RD-22-08). Oregon. Dept. of Transportation. Research Section. https://rosap.ntl.bts.gov/view/dot/59132
Martin, Andrew, Jeeyen Koo, Jennifer Walton, Chris Van Dyke, Mark Bell, and Jeff Tipton. Measuring the Rates of Weight-Mile Tax Evasion in Oregon. Report no. OR-RD-22-08. Oregon. Dept. of Transportation. Research Section, 2021. https://rosap.ntl.bts.gov/view/dot/59132.
Martin, Andrew, et al. Measuring the Rates of Weight-Mile Tax Evasion in Oregon. Oregon. Dept. of Transportation. Research Section, 2021, Report no. OR-RD-22-08, ROSA P. https://rosap.ntl.bts.gov/view/dot/59132.
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