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 presence of small animals on Minnesota’s roadways presents a public safety concern and negatively impacts wildlife populations. For the past four years, the Minnesota Zoo has partnered with the Minnesota Department of Transportation to test and evaluate the effectiveness of standard plans for small animal exclusion fencing, with the goal of red
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The Kentucky Transportation Cabinet (KYTC) has replaced the lead-based coatings on many of its steel bridges over the past 30 years. In the 1980s and 1990s, inorganic zinc primers with vinyl topcoats were the go-to option for coating replacement projects. Since 2000, the typical choice for these projects has been organic zinc primers that are part
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Lidar technologies can assist transportation agencies during the design, construction, and maintenance phases of transportation projects. While Lidar has numerous applications, successfully deploying Lidar technologies is only possible if agencies have a solid understanding of their use cases and potential limitations. This report offers guidance t
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The overall objective of this study was to explore three novel rejuvenator application methods using the emulsion and foaming technologies and determine their impacts on the workability and long-term cracking resistance of high-reclaimed asphalt pavement (RAP) asphalt mixtures. To that end, a comprehensive experimental plan was developed, which con
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This project focused on the evaluation of the influence of nanoadditives on the hydration kinetics, mechanical properties, and durability of concretes with and without supplementary cementitious materials (SCMs). The types of nanomaterials used in the course of this study included nano-titanium dioxide (nano-TiO2) and two forms of nanosilica. A ser
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Wetlands and streams provide significant ecological and societal services. Accurate mapping of their locations is necessary for ODOT to plan for avoidance or mitigation efforts and costs. The National Wetland Inventory (NWI) provides the best nationwide spatial database of wetlands, but the database has not been updated for up to four decades and m
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Plastic is everywhere, and with its increasing use in so many everyday materials, the production and demand of plastic has skyrocketed. Unfortunately, this has resulted in the accumulation of a mammoth amount of plastic waste and adverse effects on the environment. To optimize the huge amount of materials required by the pavement industry each year
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Wetlands and streams provide numerous ecosystems services and are protected under federal and state laws. These regulations require permits when fill material is discharged into regulated streams and wetlands from roadway construction and maintenance activities, which also can require compensatory mitigation. Environmental review, permitting, and m
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Florida. Department of Transportation. Civil Integrated Management Office
2022-06-01
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Florida State University researchers conducted a comprehensive literature review to collect information on traffic data collection using ILDs, particularly during congested periods.
California law (SB 743) requires school districts to measure the impact of school construction on the production of greenhouse gas emissions (GHG) and identify feasible mitigation measures that eliminate or substantially reduce the number of vehicle miles traveled (VMT) generated. This study analyzes 301 new schools constructed between 2008-2018 wi
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This report considers the outcomes of the pond maintenance strategies of sediment treatment to reduce internal loading of phosphorus, mechanical aeration, alteration of pond outlet to pull water off the bottom, reduction of wind sheltering, dredging, outlet treatment by iron enhanced sand filtration and reduction of phosphorus loading from the wate
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Finite element models (FEM) for Midwest Guardrail System (MGS) and constant UDOT slope 42-in and 54-in cast-in-place (CIP) fixed barriers are created in LS-DYNA. The FEM of a Chevrolet Silverado pickup truck is used to perform a Test Level 3 (TL-3) crash simulation for the MGS. FEMs of a Ford 800 single unit truck (SUT) and a tractor-trailer are us
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The Automated Vehicle Pooled Fund Study (AV PFS) commissioned the development of the Infrastructure Owner Operator (IOO) Strategic Roadmap for Accelerated Adoption of AVs Project to consolidate guidance and identify programs that support the ability for IOOs to nationally move forward towards integrating AVs into the surface transportation ecosyste
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State departments of transportation (DOTs) encounter a critical challenge in estimating accurate cost estimates for major lump sum (LS) pay items, such as Traffic Control and Grading Complete, due to incomplete project information during the early stages of project development. To estimate prices for LS pay items, cost estimators and designers in s
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Transportation agencies are tasked with making decisions and taking actions to fight congestion and improve road conditions using the methods and resources available to them. Performance evaluations of traffic conditions at signalized intersections and arterials provide practical data for the agencies to make well-informed decisions for targeted re
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A pilot routine in-service performance evaluation (ISPE) was undertaken for impact attenuatorsfollowing the process outlined in NCHP 22-33. Controlled stop, rollover, vehicle mix, and secondary impacts on the roadside and roadway were evaluated as performance measures using data sourced from the Crash Location & Analysis System (CLAS) database and
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ODOT funded this study to investigate existing overtime management practices in the US and search for potential automated systems that are capable of alleviating overtime management challenges. The project conducted a national scan and extensive agency outreach to evaluate existing systems. It further completed interviews with ODOT staff and develo
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Laser scanning of transportation aggregate materials provides a means to identify aggregate types, sources, and quality in near real-time. The Transportation Pooled Fund (TPF) effort described in this report began as a sequel to a TRB IDEA Program proof of concept laboratory study in 2012, and culminated in the development of the first commercial l
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A pilot routine in-service performance evaluation (ISPE) was undertaken for guardrail terminals following the process outlined in NCHRP 22-33. Controlled stop, rollover, vehicle mix, and secondary impacts on the roadside and roadway were evaluated as performance measures using data sourced from the Crash Location & Analysis System (CLAS) database a
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The ability to collect and utilize large amounts of data is transforming our world. Industries like healthcare, finance, energy, communication, and transportation are finding ways to utilize data to improve people’s lives. Processing software and inspection-specific asset management platforms are giving asset owners the ability to utilize this data
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