Volpe National Transportation Systems Center, Technical Reference Center

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Clear All Simple Search

41 - 60 of 195 results

20 50 results

Sort By:

Date Added(Desc.)

Date Added(Asc.)

Published Date(Asc.)

Published Date(Desc.)

Title (Asc.)

Title (Desc.)

« Previous 1 2 3 4 ... 10 Next »

Development of Load Rating Procedures for Deteriorated Steel Beam Ends: Deliverable 4: Final Report

Published Date:

2019-07-01

Abstract:

This study focuses on the current strength evaluation policies for strength assessment of corroded steel girders and investigates potential improvements based on real corrosion data. The research work included in this report has three phases. First, ...

File Type:

[PDF - 26.38 MB]

Added:

02/22/2021

Evaluating the Quality of Signal Operations Using Signal Performance Measures

Published Date:

2020-07-01

Abstract:

The Utah Department of Transportation (UDOT) has taken an active role in evaluating and monitoring traffic signal performance throughout the state of Utah. Automated traffic signal performance measures (ATSPM) have been adopted to collect data concer...

File Type:

[PDF - 4.08 MB]

Added:

02/22/2021

Severe Weather Index

Published Date:

2020-08-01

Abstract:

A severe weather index (SWI) was developed and tested using RWIS data from 2012 to 2020. The developed SWI model has an overall adjusted R2 = 0.67. The severity bounds are defined as low (0 to 1.2), moderate (1.2 to 8), and severe (greater than 8). T...

File Type:

[PDF - 15.72 MB]

Added:

02/22/2021

Older Drivers and Transportation Network Companies: Investigating Opportunities for Increased Safety and Improved Mobility [supporting datasets]

Published Date:

2018-11-20

Abstract:

As the U.S. population ages, increasing numbers of older adults are likely to find themselves needing to limit or cease driving, and may find their mobility options severely limited as a result. Transportation network companies (TNCs), which provide ...

File Type:

[PDF - 159.40 KB]

Added:

02/22/2021

Behavior-based Predictive Safety Analytics - Pilot Study [supporting datasets]

Published Date:

2018-11-20

Abstract:

A subset of the SHRP2 data was used to construct the datasets used for the analyses in the project. The general aim of this project was to investigate and develop statistical models predicting individual driver crash involvement based on driving styl...

File Type:

[PDF - 143.28 KB]

Added:

02/22/2021

Pavement Life Comparison for Different Traffic Scenarios [supporting datasets]

Published Date:

2019-12-01

Abstract:

The data was determined in 2017 in Texas A&M Transportation Institute using Texas Mechanistic-Empirical Pavement Design and Analysis (TxME) program. It presents the pavement damage such as rutting and cracking development with time. Three scenarios w...

File Type:

[PDF - 165.61 KB]

Added:

02/22/2021

Speed Trajectory Data from Adaptive Eco-Driving Applications [supporting datasets]

Published Date:

2019-10-17

Abstract:

The eco-approach and departure (EAD) application for signalized intersections has been proved to be environmentally efficient in a Connected and Automated Vehicles (CAVs) system. In the real-world traffic, the traffic-related information received fro...

File Type:

[PDF - 191.77 KB]

Added:

02/22/2021

Replication Data for: Evaluation of Autonomous Vehicles and Smart Technologies for Their Impact on Traffic Safety and Traffic Congestion [supporting datasets]

Published Date:

2020-01-31

Abstract:

Our research generated demographic, survey, and behavior data related to driver performance on a simulated highway environment. Data was collected from 36 individuals, that were predominantly undergraduate and graduate students at California State Un...

File Type:

[PDF - 140.46 KB]

Added:

02/22/2021

Connected Emission Control Technologies for Freight Vehicles [supporting datasets]

Published Date:

2020-02-11

Abstract:

This project explores how connected vehicle technology can be used to reduce the impacts of air pollutant emissions from freight vehicles. Specifically, the objective of this project is to develop new vehicle routing algorithms for determining travel...

File Type:

[PDF - 207.15 KB]

Added:

02/22/2021

The Impact of the Sharing Economy on Latent Individual Modal Preference

Published Date:

2017-04-01

Abstract:

Mobility patterns in our cities are changing with the onset of shared mobility services. However, publicly available information on the use of shared mobility services is lagging behind. This study set out to fill this data gap by gathering web-based...

File Type:

[PDF - 2.95 MB]

Added:

02/22/2021

Equity Assessment of Plug-In Electric Vehicle Purchase Incentives With a Focus on Atlanta, Georgia

Published Date:

2020-06-01

Abstract:

To help consumers overcome higher initial purchase costs of plug-in hybrid and battery-electric vehicles (collectively PEVs), and to help promote PEV adoption, government agencies and electric utilities have offered a variety of purchase and leasing ...

File Type:

[PDF - 7.05 MB]

Added:

02/22/2021

Investigation, Testing and Development of an RFID System for Effective Maintenance of the Existing National Transportation Infrastructure

Published Date:

2020-04-30

Abstract:

This project seeks to investigate how RFID sensors can detect black ice remotely to reduce the number of accidents caused by this thin layer of ice when it is not visible. Black ice, sometimes called clear ice, is a thin coating of ice that is visual...

File Type:

[PDF - 2.00 MB]

Added:

02/22/2021

Planning Corridors for Transit Signal Priority While Considering Pedestrian Delay

Published Date:

2020-09-01

Abstract:

This research study consisted of developing a decision-support tool for Transit Signal Priority (TSP) implementation for Virginia corridors. TSP is a measure to temporarily modify signal timings to prioritize transit vehicle movement and improve perf...

File Type:

[PDF - 1.95 MB]

Added:

02/22/2021

Evaluation of Driver Behavior at Railroad-Highway Grade Crossings Using Naturalistic Driving Study Data

Published Date:

2021-02-03

Abstract:

Michigan Technological University (Michigan Tech) used the Second Strategic Highway Research Program (SHRP2) naturalistic driving study (NDS) data and driver simulator to perform a quantitative evaluation of driver behavior at highway rail grade cros...

File Type:

[PDF - 2.07 MB]

Added:

02/22/2021

Exploring Crowdsourced Monitoring Data for Safety - Evaluation of Miovision Pedestrian Count Data [supporting datasets]

Published Date:

2019-11-04

Abstract:

The data represent one week of selected hourly weekday and weekend pedestrian counts at two intersections in Austin, Texas. The pedestrian counts were produced from manually reducing video files from Miovision’s TrafficLink Multimodal Detection and...

File Type:

[PDF - 156.66 KB]

Added:

02/22/2021

Evaluation of Techniques to Remove Defective Grout from Post-Tensioning Tendons

Published Date:

2020-02-01

Abstract:

Bridge girders in the U.S. are commonly constructed using multistrand post-tensioned (PT) tendons. Defective grout has been found in some of recently constructed bridges in the form of soft grout, which consists of segregated and unhardened grout wit...

File Type:

[PDF - 15.01 MB]

Added:

02/22/2021

Development of a Test Method for Assessing the Performance of Vehicular Traffic Signal Assemblies during Hurricane Force Winds

Published Date:

2019-03-01

Abstract:

The performance of span-wire mounted traffic signals during past hurricane seasons indicated to FDOT the need to explore new methods to improve traffic signal assembly survivability during hurricane force winds. FDOT and FIU embarked on a collaborati...

File Type:

[PDF - 11.13 MB]

Added:

02/22/2021

Automated Identification and Quantification of Flexible and Rigid Pavement Distresses

Published Date:

2019-10-01

Abstract:

This research project was conducted with the objective of evaluating the viability of using an automated computer application to detect, classify, and quantify cracks on flexible and rigid pavement surfaces from digital images, to be implemented in t...

File Type:

[PDF - 13.11 MB]

Added:

02/22/2021

Degradation Mechanisms and Service Life Estimation for Fiber Reinforced Polymer (FRP) Concrete Reinforcements

Published Date:

2019-04-01

Abstract:

Fiber-reinforced-polymer (FRP) reinforcement, such as glass and carbon, have emerged as an acceptable construction material for both new constructions as well as for the rehabilitation and strengthening of existing structures. The proven track record...

File Type:

[PDF - 5.86 MB]

Added:

02/22/2021

Structural Coefficient for High Polymer Modified Asphalt Mixes

Published Date:

2019-06-01

Abstract:

Mixes This report summarizes the information and findings from this study aiming to determine the structural coefficient for high polymer (HP) asphalt concrete (AC) mixes. In this research, HP AC mixes are defined as asphalt mixtures manufactured usi...

File Type:

[PDF - 12.29 MB]

Added:

02/22/2021

41 - 60 of 195 results

20 50 results

« Previous 1 2 3 4 ... 10 Next »