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.
Transportation System Management and Operations (TSMO) is an emerging concept being adopted by highway agencies across the United States. While the concept is currently defined very broadly depending on the objectives of the agency, TSMO essentially is an integrated set of strategies which may enable transportation agencies to stretch their funding
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Alaska DOT&PF and US Fish and Wildlife Service Alaska Region partnered to collect eagle nesting data during DOT&PF road construction work in various locations in Southeast Alaska during the summers of 2015-2018. Control nests located outside of any nearby construction activities were also monitored to compare the occupancy and productivity to nests
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This research evaluated the seismic behavior of bridges with longitudinal joints. The experimental portion of the work consisted of ten full scale sub-assembly tests modelled after a typical as-built keyway joint. The joint was tested under pure shear to determine the joint shear-slip response and associated limit states (grout cracking, embedded r
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This report summarizes the details of an experimental work and finite element modeling that were conducted to evaluate: 1) the remaining axial capacity of steel H-piles having different corrosion severity and extension levels, and 2) the performance of repaired corroded steel H-piles. The research consisted of 32 short steel H-piles (10 × 42) encas
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This report contains the findings of a synthesis study on the use of link slabs to eliminate intermediate joints in bridges of Indiana. The study was conducted under the sponsorship of the Joint Transportation Research Program. The motivation for the study was to investigate this promising technique to mitigate the damage associated with expansion
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United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
2019-05-14
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Every year, the Department of Commerce (DOC) submits a Federal Laboratory T2 Fiscal Year Summary Report to the President and the Congress in accordance with 15 U.S.C. 3710(g)(2). The report summarizes the implementation of technology transfer authorities established by the Technology Transfer Commercialization Act of 2000 (Pub. L. 106-404) and othe
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This report presents improved methods for planning and scheduling interrelated improvements in transportation networks. Due to the complexity of the relevant evaluation functions, which cannot be optimized with classical calculus techniques, the proposed methods rely on customized genetic algorithms for optimizing the selection, sequencing and sche
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The objective of the current study is to evaluate the use of virtual reality (VR) headsets to measure driving performance for driving simulation studies and training. This is desirable because they are several orders of magnitude less expensive and, if validated, could greatly extend the powers of simulation. Out of several possible measures of per
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Traffic congestion has become a major problems in many urban areas, and has related environmental, economic, and equity impacts. One potential method of reducing urban traffic congestion is developing tools that plan multi-modal trips to encourage more people to ride public transportation and to provide better driving alternatives for less affluent
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The Washington, DC metropolitan area consistently ranks among the top ten most congested U.S. cities. This congestion impacts travel time for drivers and bus riders alike. Throughout most of the day, bus speeds average less than five mph through downtown DC. The District’s existing transit only lanes on Georgia Avenue NW have led to travel time sav
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This report studies driver and traveler attitudes towards UberPool and Lyft Shared, Uber and Lyft’s services that take advantage of data connectivity and analytics to match travelers on the fly so they can share rides. We conducted a survey of over 300 drivers and over 1100 Uber/Lyft travelers in the cities where shared service is offered. We inclu
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Accelerated bridge construction (ABC) techniques are rapidly gaining acceptance as an alternative to conventional construction methods to reduce construction duration and minimize the impact of closures at the network level. There are different types of ABC, and each technique has its limitations and its own speed of completion. The choice of using
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Traffic crashes in suburban school zones pose a serious safety concern due to a higher presence of school-age pedestrians and cyclists as well as potential speeding issues. A study that investigated speed selection and driver behavior in school zones was carried out using two populations from different topographical and cultural settings: Puerto Ri
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The objectives of this project were to assess the mechanical performance and durability of open-graded friction course FC-5 mixtures fabricated with a highly polymer-modified (HP) binder (that complied with the requirements of FDOT specifications, Section 916-2), compare the results with those obtained in mixtures fabricated with a conventional pol
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This document contains an overview of the software infrastructure developed under the SAFER-SIM project “Developing an Open Source Multi-Agent Simulation Environment for Connected Autonomous Vehicles”. We provide a description of the four foundational simulation elements – agent dynamics, sensing, communication, and virtual worlds – that anchor Syn
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Eco-driving strategies based on connected and automated vehicles (CAV) technology, such as Eco-Approach and Departure (EAD), have attracted significant worldwide interest due to their potential to save energy and reduce tail-pipe emissions. In this project, the research team developed and tested a deep learning–based trajectory-planning algorithm (
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For traffic signal control, Time of Day (TOD) mode of operations is widely deployed in practice for selecting a signal timing plan. However, TOD mode in not effective in adapting to variations in traffic conditions, such as special events and holidays, incidents, etc. Several research studies have reported the potential of Traffic Responsive Contro
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This study estimates households’ willingness to pay for single-family houses and condominiums/townhouses located within 2 miles of Warm Springs (WS) BART Station in Fremont, CA. The study finds that, compared to the houses sold in the referent category (2 to 5 miles away and sold during the pre-project-announcement period of 2000-2001), an average-
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The Texas Department of Transportation (TxDOT) is in the process of conducting several parallel efforts to evaluate rural highway horizontal curves. Following the adoption of the 2011 Texas Manual on Uniform Traffic Control Devices, district personnel are checking and updating posted curve advisory speeds and other curve traffic control devices (e.
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Three casinos recently opened in Maryland: Maryland Live! at the Arundel Mills Mall, Horseshoe in Downtown Baltimore, and MGM at the National Harbor. While these new gaming resorts brought new jobs, economic development opportunities, and tax revenue to Maryland, they also created new travel demand patterns which could produce traffic impacts on re
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