I'm an Assistant Research Scientist at Texas A&M Transportation Institute (TTI) . I received my PhD from the Civil Engineering Department of University of Louisiana at Lafayette in 2015.
My primary fields of research interest are urban data science, roadway safety, roadway design/operation, data visualization, and natural language processing. I am the author or co-author of over 100 technical papers or research reports. During my five years of work at TTI, I handled sixteen national and state research projects (around 2 million dollar budget values) as the PI or Co-PI. One of my research projects won 2014 AASHTO High Value Research ‘Sweet Sixteen’ Award. I am an Eno Fellow (2015). Recently, I was awarded the Young Researcher Award at TTI.
Recent News
17 papers have been accepted for presentation (7 papers for publication) at the 2021 TRB Annual Meeting. January, 2021
Elsevier accepts my book chapter on influcence of COVID-19 on industries December, 2020
This USDOT project aims to understand the contribution of prevailing speed, speed limit, and average travel speed to the prevalence of crashes on rural highways. My role: Principal Investigator.
This NASEM project will identify and quantify the cost, safety, and environmental impacts of roadside vegetation management practices with an interactive tool. My role: Co-Principal Investigator.
This FHWA project will develop technical documents that the FHWA Safety Programs will use to market, promote, inform, and advance knowledge on the noteworthy practices of TSP. My role: Principal Investigator.
This guide describes scalable risk assessment methods for pedestrians and bicyclists, wherein risk is a measure of the probability of a crash to occur given exposure to potential crash events. My role: Researcher.
This project will identify significant individual, community, and cultural factors that contribute to impaired driving in Louisiana with an interactive tool of risk scoring. My role: Co-Principal Investigator.
This project won 2014 AASHTO High Value Research Award. This project evaluated the safety effectiveness of edgelines on low-volume narrow rural two-lane roadways. My role: Researcher.
This project will provide guideline for selecting appropriate permanent vegetation controls around roadside appurtenances and along roadside. My Role: Researcher. (2018-2019, NASEM)
Extracting Patterns from Twitter to Promote Biking S. Das, A. Dutta, G. Medina, L. Minjares-Kyle, Z. Elgart.
IATSS Research, 2018.Journal
Vehicle Consumer Complaint Reports Involving Severe Incidents: Mining Large Contingency Tables S. Das, A. Mudgal, A. Dutta, S. Geedipally.
Transportation Research Record, 2018.Journal
Using Deep Learning in Severity Analysis of At-Fault Motorcycle Rider Crashes S. Das, A. Dutta, K.Dixon, L. Minjares-Kyle, G. Gillette.
Transportation Research Record, 2018.Journal
Investigation on the Wrong Way Driving Crash Patterns using Multiple Correspondence Analysis S. Das, R. Avelar, K. Dixon, X. Sun.
Accident Analysis and Prevention, 2018.Journal
Supervised association rules mining on pedestrian crashes in urban areas: identifying patterns for appropriate countermeasures S. Das, A. Dutta, R. Avelar, K. Dixon, X. Sun, M. Jalayer.
International Journal of Urban Sciences, 2018.Journal
Factors influencing the patterns of wrong-way driving crashes on freeway exit ramps and median crossovers: exploration using ‘Eclat’ association rules to promote safety S. Das, A. Dutta, M. Jalayer, A. Bibeka, L. Wu.
IJTST, 2018.Journal
Safety Effectiveness of Roadway Conversion with a Two Way Left Turn Lane S. Das, X. Sun, K. Dixon, and A. Rahman.
Journal of Traffic and Transportation Engineering, 2018.Journal
Improper Passing related Crashes: Identifying Patterns using Negative Binomial Precise Rules. S. Das.
The 7th NDRS (NDRS 2018), Blacksburg, VA, Aug 28-30, 2018.Conf.
Vehicle Speeds in Presence of Bicyclists. S. Das, K. Fitzpatrick, C. Manaswini.
Joint ITE Meeting, Keystone, CO, Jun 24-27, 2018.Conf.
Macro-Level Analysis of Association between Non-motorized Trips, Socio-Economic Characteristics, and Crime
A. Bibeka, S. Das, M. martin, M. Jalayer, S. Munira.
TRB Annual Meeting, Washington DC, Jan 7-11, 2018.Conf.
# TRBAM: Exploring Knowledge Management, Research Trends, and Networks by Social Media Mining S. Das, L. Minjares-Kyle, K. Dixon, A. Palanisamy, A. Dutta.
TRB Annual Meeting, Washington DC, Jan 7-11, 2018.Conf.
Safety Performance of Truck Lane Restrictions in Texas: Empirical Bayes Observational Before-After Analysis S. Das, M. Le, M. Pratt, and C. Morgan.
TRB Annual Meeting, Washington DC, Jan 7-11, 2018.Conf.
Knowledge Extraction from Transportation Research Thesaurus S. Das, A. Dutta.
TRB Annual Meeting, Washington DC, Jan 7-11, 2018.Conf.
Knowledge about Crash Risk Factors and SelfReported Driving Behavior: Exploratory Analysis on Multi-State Teen Driver Survey
L. Minjares-Kyle, S. Das, G. Medina, R. Henk.
TRB Annual Meeting, Washington DC, Jan 7-11, 2018.Conf.
Safety Performance Evaluation of Urban Undivided Four-Lane to Five-Lane Conversion in Louisiana
A. Rahman, X. Sun, S. DasTRB Annual Meeting, Washington DC, Jan 7-11, 2018.Conf.
Association of Reduced Visibility with Crash Outcomes S. Das, B. Brimley, T. Lindheimer, M. Zupancich. IATSS Research, 2017. Journal
Trends in Transportation Research: Exploring Content Analysis in Topics S. Das, K. Dixon, X. Sun, A. Dutta, and M. Zupancich. Transportation Research Record, 2017. Journal
Exploring SHRP2 NDS for the perspective of Self-Driving Cars in Difficult Driving Condition S. Das.
Autonomous Vehicle Symposium, San Francisco, CA, Jul 10-14, 2017.Conf.
Converting Four lane roadways into Five lane roadways on Urban Structure: Study on Safety Effectiveness S. Das, X. Sun, K. Dixon.
Urban Street Symposium 5, Raleigh, NC, May 21-24, 2017.(Best Paper Award)Conf.
Using Machine Learning Techniques to estimate nonmotorized trips for rural roadways S. Das, K. Dixon, R. Avelar, and K. Fitzpatrick.
TRB Annual Meeting, Washington DC, Jan 8-12, 2017.Conf.
Twitter in Circulating Transportation Information: A Case Study on Two Cities S. Das, X. Sun, A. Dutta, M. Zupancich.
TRB Annual Meeting, Washington DC, Jan 8-12, 2017.Conf.
Safety Evaluation of the Seasonality of Crashes with Tire Debris on Highways and Freeways
R. Avelar, T. Lindheimer, K. Dixon, J. Miles, S. Das.
TRB Annual Meeting, Washington DC, Jan 8-12, 2017.Conf.
Developing Crash Models with Support Vector Machine for Urban Transportation Planning
X. Sun, S. Das, N. Broussard.
The 17th RS5C, Rio de Janeiro, Brazil, May 17-19, 2016.Conf.
Text Mining and Topic Modeling on Compendium Papers from Transportation Research Board Annual Meetings S. Das, X. Sun, A. Dutta. Transportation Research Record, 2016. Journal
Association Knowledge for Fatal Run-off-road Crashes by Multiple Correspondence Analysis S. Das, X. Sun. IATSS Research, 2016. Journal
Estimating Traffic Volume of Non-state Roadways with Support Vector Regression S. Das, X. Sun.TRB Annual Meeting, Washington DC, Jan 10-14, 2016. Conf.
Effectiveness of Inexpensive Crash Countermeasures to Improve Traffic Safety S. Das.TRB Annual Meeting, Washington DC, Jan 10-14, 2016. Conf.
Imaged-based Discrete Element Modeling of Hot Mix Asphalt Mixtures
M. Khattak, A. Khattab, H. Rizvi,S. Das, M. Bhuyan. Materials and Structures, 2015. Journal
Factor Association with Multiple Correspondence Analysis in Vehicle-Pedestrian Crashes S. Das, X. Sun.
Transportation Research Record, 2015. Journal
Estimating likelihood of Future crashes for Crash-prone Drivers S. Das, X. Sun, F. Wang, and C. Leboeuf. Journal of Traffic and Transportation Engineering, 2015. Journal
Zero-Inflated Models for Different Severity Types in Rural Two-Lane Crashes S. Das, X. Sun.TRB Annual Meeting, Washington DC, Jan 10-14, 2015. Conf.
Determining the Knowledge Gap in Performance Based Analysis of Geometric Design and Condition Incorporating Safety S. Das, X. Sun.TRB Annual Meeting, Washington DC, Jan 10-14, 2015. Conf.
Investigating Safety Impact of Edgelines on Narrow, Rural Two-Lane Highways by Empirical Bayes Method
X. Sun, S. Das, Z. Zhang, F. Wang, and C. Leboeuf. Transportation Research Record, 2014. Journal
Analyzing At-fault Crash-Prone Drivers of Louisiana associated with Multiple Crashes S. Das.SASHTO 2014 Annual Conference, New Orleans, LA, Aug 23-27, 2014.(Best Paper Award)Conf.
Sentiment Analysis of the Riders of the Bike Sharing Program S. Das, X. Sun, A. Dutta.The 55th Annual Transportation Research Forum, San Jose, CA, Mar 13-15, 2014. Conf.
Investigating the Pattern of Traffic Crashes under Rainy Weather by Association Rules in Data Mining S. Das, X. Sun.TRB Annual Meeting, Washington DC, Jan 12-16, 2014. Conf.
Investigating the Safety Impact of Raised Pavement Markers on Freeways in Louisiana S. Das, X. Sun, Y. He, F. Wang, and C. Leboeuf. IJERI, 2013. Journal
Four-Lane to Five-Lane Urban Roadway Conversions for Safety
X. Sun , S. Das, N. Fruge, R. Bertinot, and D. Magri. Journal of Transportation Safety & Security, 2013. Journal
Analyzing Crash-Prone Drivers in Multiple Crashes for Better Safety Educational and Enforcement Strategies
X. Sun , S. Das, S. Rasel, F. Wang.TRB Annual Meeting, Washington DC, Jan 13-17, 2013. Conf.
Level of Service for Parking Facilities
Y. He, X. Sun, L. Du, R. JinmeiS. Das.15th International IEEE Conference on ITS, Anchorage, AK, Sep 16-19, 2012. Conf.
