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.
United States. Department of Transportation. Highly Automated Systems Safety Center of Excellence
2024-09-01
|
PDF
Our first AI Assurance (AIA) whitepaper, An Overview of AI Assurance for Transportation, was published in April 2024. One of the identified key areas for AIA research is AI risk assessment and mitigation, which has not been explored sufficiently in the past. To promote and accelerate research efforts to address AI risks, this whitepaper—as the seco
...
It is often difficult to compare different travel modes when it comes to assessing sustainability. That is because there are many factors guiding investment to different modes of transportation and these factors may not always be comparable from one mode to another. This study aims to develop a holistic impact measurement (HIM) methodology incorpor
...
Minerals, forestry, agriculture, and industrial activities in Minnesota generate substantial by-products and waste. Strategies to reuse or recycle these can reduce landfill waste, enhance public health, conserve resources, and cut costs and emissions. Building on the frameworks by Johnson et al. (2017), Saftner et al. (2019), and Saftner et al. (20
...
This report discusses first-last mile transportation with a focus on access to employment. The Project Team examined first-last mile transportation services in other states in a variety of contexts, as well as the existing transportation landscape in Missouri.
Transportation system construction activities can cause increased suspended and redeposited solids in adjacent water systems, which may adversely impact freshwater mussels. The objectives of this study are to evaluate the impacts of suspended solids on juvenile mussels including to establish the impact thresholds, to assess the effects of sediment
...
Iowa State University. Institute for Transportation
2024-09-01
|
PDF
This summary addresses some of the access management measures that might be considered when a four- to three-lane or other cross section conversion project is being implemented. Several access issues identified and discussed in the Road Diet Informational Guide (Knapp et al. 2014) are listed, and other measures included in the Iowa DOT Access Manag
...
The Indiana Department of Transportation (INDOT) adopted the Maintenance Decision Support System (MDSS) for user-defined plowing segments in the winter of 2008–2009. Since then, many new data sources, including connected vehicle data, enhanced weather data, and fleet telematics have been integrated into INDOT winter operations activities. The objec
...
The Ohio Department of Transportation has partnered with Drivewyze to improve safety and mobility on Ohio’s highways, focusing on commercial vehicle safety alerts (CVSAs). Through this partnership, Drivewyze provides commercial motor vehicle (CMV) drivers with real-time alerts via in-cab electronic logging devices (ELDs). The alerts are intended to
...
This study aimed to evaluate the performance of Iowa eggshell waste in improving the engineering properties of Iowa geo-materials and to establish recommendations for the use of Iowa eggshell powder (ESP).
This project examined the use of the light weight deflectometer (LWD) and the air permeameter test (APT) for control of the state of compaction and hydraulic conductivity of aggregate drainage layers. The investigation included an extensive program of LWDs, APTs, and nuclear density tests on two testing strips constructed at an experimental site—on
...
The Ohio Department of Transportation has partnered with Drivewyze to improve safety and mobility on Ohio’s highways, focusing on commercial vehicle safety alerts (CVSAs). Through this partnership, Drivewyze provides commercial motor vehicle (CMV) drivers with real-time alerts via in-cab electronic logging devices (ELDs). The alerts are intended to
...
The Kansas Department of Transportation (KDOT) is interested in finding a more efficient and accurate restriping system than the current system in use in order to save costs and/or accomplish the same work using fewer field personnel. Therefore, this report details the potential financial advantages for KDOT to deploy an automated pavement restripi
...
Winter storms significantly increase crash risk and disrupt travel, especially under extreme conditions. Gusty winds, heavy moisture, and low temperatures can quickly make travel dangerous in the Northern Plains. This study was aimed at understanding winter truck crashes, given the prominence of commercial vehicle travel in the region’s economy. Tr
...
This report summarizes the research conducted using Measurement While Drilling (MWD) technology that was recently implemented as part of routine geotechnical investigations conducted by the New Hampshire Department of Transportation (NHDOT). MWD is a system that consists of several sensors directly mounted or connected to a drill rig to monitor all
...
Tour-based and activity-based travel demand models are generally considered more theoretically robust compared to their trip-based counterparts, as activity-based models (ABMs) explicitly model individuals making travel choices in contrast to the aggregate nature of trip-based models. There have been a number of comparisons between trip- and activi
...
Current quality control and quality assurance practices for asphalt pavements rely heavily on density (%Gmm) measurements, which are directly linked to pay adjustments. However, these practices can inadvertently encourage over-compaction, leading to issues such as aggregate segregation, crushing, and reduced pavement quality, especially under poor
...
A significant portion of severe crashes and severe crashes involving vulnerable road users (VRU), 29 percent and 39 percent respectively, occur at night in Utah. Nighttime crash causes are less understood than daytime crashes as there are fewer nighttime crashes, but it is generally assumed that increasing street lighting can help mitigate these cr
...
The project objectives were as follows: • Objective 1. Engage traditional and new stakeholders in a partnership to increase public awareness and deliver continuous education to prevent large truck crashes in a state truck education and outreach partnership (ND TE-OP). The notion of a TOL would be explored as a facet in the sustained partnership. Th
...
Reliable and accurate assessment and prediction of bridge condition deterioration is critical for effective bridge preservation. Deterioration models, combined with current condition information, can guide inspection, maintenance, repair, and rehabilitation planning, and support risk and life-cycle analysis. Existing Markov deterioration models, wh
...
The Grand Forks-East Grand Forks Regional Intelligent Transportation Systems (ITS) Architecture was developed under the leadership of the Grand Forks-East Grand Forks Metropolitan Planning Organization (GF-EGF MPO). This architecture has been updated three times since its original development—in 2008, 2014, and 2019. The goal of the GF-EGF regional
...
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.