Research

I am a Transportation Systems Engineering PhD candidate. The Research Advisory Committee of the American Association of State Highway Transportation Officials has selected two of my research projects (Safety Improvement from Edge Lines on Rural Two-Lane Highways / A Comprehensive Study on Pavement Edge Line Implementation) as one of its High Value Research Projects for 2014. I co-authored both of the final reports. I am keenly interested in integration of data science and statistical learning in transportational safety. Recently, I have almost completed the course work required for a Masters degree in Statistics.

Peer Reviewed Papers

• Factor Association using Multiple Correspondence Analysis in Vehicle-pedestrian Crashes Subasish Das, Dr. Xiaoduan Sun
  This research uses Multiple Correspondence Analysis (MCA) for detecting and representing underlying structures in a categorical data set, to analyze eight years (2004-2011) of vehicle-pedestrian crashes in Louisiana. [Accepted for publication in Transportation Research Record ].

• Estimating the Likelihood of Future Crashes for the Crash Prone Drivers Subasish Das, Dr. Xiaoduan Sun
  This study develops a crash prediction model to estimate the likelihood of a driver with at-fault crashes to have a future crash. [Accepted for publication in Journal of Traffic and Transportation Engineering ].

• Zero-Inflated Models for Different Severity Types in Rural Two-Lane Crashes Subasish Das, Dr. Xiaoduan Sun
  This research aims to investigate the application of zero-inflated models for different severity types in rural two-lane highway crashes. The findings of this paper will help highway professionals improve the safety outcome of rural two-lane roadways. [Published in the Conference proceeding of 94th TRB Annual Meeting, Washington DC, Jan. 2015 ].

• Investigating Safety Impact of Edge Line on Narrow Rural Two-Lane Highways by Empirical Bayes Method Dr. Xiaoduan Sun, Subasish Das, Dr. Zhongjie Zhang, Chales LeBouef, Wang Fan
  This FHWA research was funded by Louisiana Department of Transporation and Development (LaDOTD). The research conducts the safety assessment of edge lines with benefit-cost analysis. [Published in Transportation Research Record (TRR), Vol. 2433, pp. 121-128].

• Imaged-based Discrete Element Modeling of Hot Mix Asphalt Mixtures Dr. Mohammad J Khattak, Dr. Ahmed Khattab, Hashim Rizvi, Subasish Das
  This paper presents the development of micro-mechanical discrete element model for hot mix asphalt (HMA) mixtures modified with carbon nanofibers using the advanced imaging techniques. [Published in Materials and Structures, May 2014].

• Exploring Clusters of Contributing Factors for Single-Vehicle Fatal Crashes Through Multiple Correspondence Analysis Subasish Das, Dr. Xiaoduan Sun
  This research uses Multiple Correspondence Analysis (MCA), an exploratory data analysis method used for detecting and representing underlying structures in a categorical data set, to analyze eight years (2004-2011) of single-vehicle fatal crashes in Louisiana. [Published in the Conference proceeding of 93th TRB Annual Meeting, Washington DC, Jan. 2014 ].

• Investigating the Pattern of Traffic Crashes Under Rainy Weather by Association Rules in Data Mining Subasish Das, Dr. Xiaoduan Sun
  This paper demonstrates how to apply this data mining methods to discover crash patterns during rainy weather with eight years of Louisiana crash data (2004-2011). [Published in the Conference proceeding of 93th TRB Annual Meeting, Washington DC, Jan. 2014 ].

• Sentiment Analysis of the Riders of the Bike Sharing Programs Subasish Das, Anandi Dutta
  This paper presents the scope of using sentiment analysis approach in evaluating the impact of a bike sharing program in Washington DC. [Published in the Conference Proceedings of 55th Annual Transportation Research Forum, San Jose, California, Mar. 2014].

• Association Rules Mining on the Ridership Data of a Bike Sharing Program Subasish Das, Anandi Dutta
  This paper presents the scope of using association rules data mining in evaluating the impact of a bike sharing program in Washington DC. [Published in the Conference Proceedings of 55th Annual Transportation Research Forum, San Jose, California, Mar. 2014].

• Analyzing Crash-Prone Drivers in Multiple Crashes for Better Safety Educational and Enforcement Strategies Dr. Xiaoduan Sun,, Subasish Das, Yulong He
  This paper conducts research on crash prone driver's crash record for better safety enforcement. [Published in the conference Proceedings of TRB 93rd Annual Meeting, Washington DC, Jan. 2013].

• Investigating the Safety Impact of Raised Pavement Markers on Freeways in Louisiana Subasish Das, Dr. Xiaoduan Sun
  This study was conducted to investigate RPM safety impact on freeway crashes with nine years of data. [Published in International Journal of Engineering Research and Innovation (IJERI), Vol. 5, No. 2, 2013].

• Four-Lane to Five-Lane Urban Roadway Conversions for Safety Subasish Das, Dr. Xiaoduan Sun, Chalrles LeBouef, Wang Fan
  This article introduces a crash countermeasure successfully implemented on two different segments of undivided roadways in Louisiana. [Published in Journal of Transportation Safety and Security, Vol. 5, No. 2, 2013].

• Level of service for parking facilities Dr. Yuhong Le, Dr. Xiaoduan Sun, Lizeng Du, Subasish Das
  This paper introduces a level of service (LOS) concept based on a comprehensive parking study in Beijing, China. [Published in the conference proceedings of 15th International IEEE Conference on Intelligent Transportation Systems, Anchorage, Alaska, Sep. 2012].

Author'copy of the papers >>

MCA Pedestrian Zero Inflated Edge Line Discrete Element MCA Run-off Association Rainy

Crash Prone Drivers RPM 4U to 5T L.O.S.4U to 5T Likelihood

TRB Posters >>

2015 MCA Poster 2015 Zero Inflated Poster 2015 Edge Line Poster 2015 4Uto5T Poster 2014 MCA Poster 2014 Association Rules Poster

Primary Topic Manage Analyze Collect Research

Tool Type Software Database Application Guide Information Guide Information Source

Focus Area Roadway Departure Intersection Pedestrian/Bike Local/Rural Speed

Agency Level State Regional Local

Program/Project Level Program Project Priority Ranking

Data Type Crash Injury/Hospital Roadway Operational

Data Coverage National Regional/State/Local

Online Access Yes No

Charge Public Proprietary Unknown

Project Development Process Planning Alternative Development Design Operations and Maintenance

Safety Management Process Network Screening Diagnosis Countermeasure Selection Economic Appraisal

Project Prioritization Safety Effectiveness

Project Development Process Planning Alternative Development Design Operations and Maintenance

Program SHSP HSIP Safe Routes to School Transportation Safety Planning

Focus Area Roadway Departure Intersection Pedestrian/Bike Local/Rural Speed

Agency Level State Regional Local

Program/Project Level Program Project Priority Ranking

Data Type Crash Injury/Hospital Roadway Operational

Data Coverage National Regional/State/Local

Online Access Yes No

Charge Public Proprietary Unknown

Project Reports

Final Reports

• LTRC TIRE Project 2014 — User Sentiment Analysis with Louisiana Social Media Data for Better and Effective Crash Countermeasures
• Local Road AADT Project — Developing a method for estimating Traffic Volumes Local Roads in Louisiana
• Edge Line Project 3 — A Comprehensive Study on Pavement Edge Line Implementation ☼ Recipient of 2014 AASHTO High Value Research “Sweet Sixteen” Award ☼
• Lousiana CMF Project — Developing Crash Modification Factors for Louisiana ☼ Nominated for 2013 AASHTO High Value Research “Sweet Sixteen” Award ☼
• Edge Line Project 2 — Safety Improvement from Edge Lines on Rural Two-Lane Highways ☼ Recipient of 2014 AASHTO High Value Research “Sweet Sixteen” Award ☼

Report Chapters

• Louisiana Low Cost Project — Developing Inexpensive Crash Countermeasures for Louisiana Local Roads
• LTRC TIRE Project 2012 — Mining Potentially Interesting Positive and Negative Association Patterns from Traffic Safety Data

Conference Presentations

• TRB Annual Meetings 2011-2015 — Eleven poster presentations in consecutive five TRB annual meetings in Washington DC.
• Transportation Research Forum Annual Meeting, 2014 — 1 Poster, and 1 Lecturn Session.
• International Forum on Traffic Records and Highway Information Systems, 2014 — Investigating Crash Prone Drivers Problems in Louisiana
• International Forum of Traffic Records, 2013 — Investigating Safety Impact of Raised Pavement Markers on Freeways in Louisiana
• 2014 SASHTO Outstanding Graduate Research Award — Analyzing At-fault Crash-Prone Drivers of Louisiana Associated with Multiple Crashes

Awards

• 2015 — 2015 Eno Transportation Fellow
• 2014 — 2014 Gulf Region ITS (GRITS) Scholarship
• 2014 — 2014 SASHTO Outstanding Graduate Research Award
• 2013 — 2013 Gulf Region ITS (GRITS) Scholarship First Place Award
• 2011-2014 — Deep South Institute of Transportation Engineers Scholarship
• 2012 — Travel award for 9th Postgraduate Academic Forum of Beihang University, China [declined]
• 2012 — University of Louisiana Engineering Designing Leader

Work Experience

• University of Louisiana, Lafayette, LA — Research Asssistant, and Teaching Assistant [2010- present]
• Hennessey LLC, Dubai, UAE — Quantity Surveyor [May 2008- Jul. 2009]
• Mak International, Dhaka, Bangladesh — Project Engineer [Jun. 2007- May 2008]