Research

Dr. Bhowmik's research primarily focus on developing data-driven quantitative approaches including econometric models and optimization techniques to uncover causal relationships within the transportation field and address different transportation related issues. His research expertise encompasses transportation planning and safety, sustainable urban transportation, disaster management, energy demand analysis and adoption of emerging technologies and its' impact on transportation system. In his work, he tackled several methodological challenges within the transportation field. These include capturing population heterogeneity, examining the impact of common unobserved factors, effectively pooling data from various sources, spatio-temporal heterogeneity and addressing the dimensionality challenge inherent in transportation data.

transportation data. In particular, Dr. Bhowmik has estimated and validated several novel mathematical frameworks including mixed effect model, panel mixed model, fractional split model, a combined analytical-simulation based approach within copula framework, mixed latent segmentation and multidimensional joint models to address several empirical issues within the transportation domain.

Past Work

In road safety research, Dr. Bhowmik's work addressed several road safety issues including: a) crash frequency analysis; b) crash severity analysis and c) real time crash risk analysis. Specifically, his work focused on developing advanced econometric models for analyzing crash factors and frequency, including the fractional split model and copula model. In one of his work. he had simplified multivariate crash frequency models by addressing the address the dimensionality challenge in the traditional multivariate crash frequency models. He developed a unified framework that is not influenced by the number of dependent variables as opposed to the explosion in complexity with increasing dimensions in traditional models. Through his integrated approach, he analyzed different crash types and the corresponding crash severity simultaneously (resulting in total 24 dimensions) to gain a more accurate understanding of the safety dynamics. Additionally, he had pioneered innovative crash severity analysis, considering driver errors, crash types, vehicle damage, and injury severity within a unified framework, as well as high-resolution injury severity models based on medical professionals' assessments. Click the images to see the paper.

Covered various facets of transportation planning related research including traffic forecasting, sustainability, airline demand, and freight movement. Dr. Bhowmik's research strive to provide comprehensive insights that inform decision-makers and contribute to the enhancement of transportation systems and infrastructure. This involves analyzing traffic trends for future planning, promoting sustainable travel options to address urbanization challenges, and focusing on safety through innovative approaches like active traffic management. Additionally, his work investigated the factors influencing airline demand, aiding in forecasting trends, and optimize freight logistics and distribution networks to enhance efficiency and reduce congestion. Click the images to see the paper.

Dr. Bhowmik has explored the transformative impact of technological innovations on the transportation field, with a particular focus on shared mobility systems like bike-sharing, car-sharing, ride sourcing, and ride-splitting. He also investigated how the adoption of these modes influences travel behavior at both the household and individual levels.

He also conducted research on the effects of COVID-19 on shared mobility systems, aiming to provide insights into their recovery and long-term implications in a rapidly changing transportation landscape. Dr. Bhowmik has conducted research into the adoption rate of electric vehicles among individuals. His work has focused on identifying the factors that influence individuals' decisions to purchase electric vehicles. Additionally, he also explored the temporal and spatial variations in the adoption of electric vehicles, providing valuable insights into the evolving landscape of sustainable transportation choices. Click the images to see the research.

Dr. Bhowmik conducted comprehensive studies to assess the multifaceted impact of the COVID-19 pandemic. His work focused on understanding COVID-19 transmission and mortality rates at the county level in the United States, as well as factors influencing hospitalization and ICU usage rates. Additionally, he examined the repercussions of the pandemic on the airline industry, particularly in forecasting demand recovery under various scenarios. He also focused on assessing the pandemic's impact on freeway traffic volume and predict the timeline for a return to pre-pandemic capacity levels. These research endeavors aim to provide empirical insights that can inform policy decisions, prioritize health infrastructure support, and aid in the recovery of affected industries. Click the images to see the paper.