Browsing by Author "Dhingra, Neeraj"
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Detecting Sources of Ride Roughness by Ensemble Connected Vehicle Signals
Bridgelall, Raj; Bhardwaj, Bhavana; Lu, Pan; Tolliver, Denver D.; Dhingra, Neeraj (2022)It is expensive and impractical to scale existing methods of road condition monitoring for more frequent and network-wide coverage. Consequently, defects that increase ride roughness or can cause accidents will go undetected. ... -
Enhancement of Signals from Connected Vehicles to Detect Roadway and Railway Anomalies
Bridgelall, Raj; Chia, Leonard; Bhardwaj, Bhavana; Lu, Pan; Tolliver, Denver D.; Dhingra, Neeraj (2019)Frequent network-wide monitoring of the condition of roadways and railways prevent fatalities, injuries, and financial losses. Even so, agencies cannot afford to inspect vast transportation networks using present methods. ... -
Importance of Contract Attributes on Conservation Reserve Program Enrollment Decisions in the Prairie Pothole Region
Dhingra, Neeraj (North Dakota State University, 2015)U.S. farmers’ interest in CRP has waned. Enrollment for 2015 was targeted at 26 million acres but as of the end of February, actual enrollment had declined to 24.6 million acres (USDA, 2015). Available studies point to ... -
Ranking Risk Factors in Financial Losses From Railroad Incidents: A Machine Learning Approach
Dhingra, Neeraj; Bridgelall, Raj; Lu, Pan; Szmerekovsky, Joseph; Bhardwaj, Bhavana (2023)The reported financial losses from railroad accidents since 2009 have been more than US$4.11 billion dollars. This considerable loss is a major concern for the industry, society, and the government. Therefore, identifying ... -
Signal Feature Extraction and Combination to Enhance the Detection and Localization of Railroad Track Irregularities
Bhardwaj, Bhavana; Bridgelall, Raj; Lu, Pan; Dhingra, Neeraj (2020)Tracks are critical and expensive railroad asset, requiring frequent maintenance. The stress from heavy car axle loads increases the risk of deviations from uniform track geometry. Irregularities in track geometry, such ... -
Signal Filter Cut-off Frequency Determination to Enhance the Accuracy of Rail Track Irregularity Detection and Localization
Bhardwaj, Bhavana; Bridgelall, Raj; Chia, Leonard; Lu, Pan; Dhingra, Neeraj (2019)A continuous condition monitoring system to detect and localize railroad track irregularities is achievable with inertial sensors onboard revenue service trains. However, the inaccurate geospatial position estimates of GPS ... -
Three Essays on Railroad Safety Analysis Using Non-Parametric Statistical Methods
Dhingra, Neeraj (North Dakota State University, 2022)he FRA mandated railroad companies to install a new monitoring system known as Positive Train Control (PTC). This system overlays sensors, signals, and transponders over existing track and other wayside infrastructure. ...