Today, we speak with Abdullah Kurkcu, a Lead Traffic Modeler. Abdullah did his Master’s and Ph.D. programs in Transportation Engineering and has since been involved in research in the field. For the most part, transportation engineering involves working with transportation data to make predictions. In this episode, Abdullah discusses his work around bicycle usage in the US and how it has been affected by COVID-19.
As a way of introduction, Abdullah gave an overview of what transportation engineers do and explained why they are critical, especially in big cities. To build and optimize transportation models, however, data are an important ingredient. Abdullah explained how the evolution of smartphones has helped in capturing the necessary data for his analysis. Specifically, he used the Colorado dataset of bicycle and pedestrian count.
He also gave an intuition of how he approached the bicycle dataset and his initial reservations about COVID-19 on bicycle usage for transportation. The Traffic Modeler discussed his discoveries in the peak hours before and after COVID. Abdullah also talked about the multiple stations in the system and the measures he took to differentiate the stations.
Abdullah then discussed the bias in the data. Bias was primarily from insufficient data. Of course, the data of bicycle riders are not as abundant as vehicle transportation data and the few available are not willing to answer survey questions. Abdullah also talked about the observation between the features, the trends he observed before his analysis, and whether they agreed with his results. He also explained why he accounted for collinearity in the feature engineering process.
He then talked about how he modeled the problem. It appears that having two timestamps - before and after COVID - is not the best way to model the problem. Abdullah detailed the intuition behind the problem modeling process and why it was necessary to get a holistic understanding of COVID’s effect on bicycle usage.
Partial Least Square Regression (PLSR) was the regression technique used for this problem. The Transportation Engineer explained why this was his preferred algorithm amidst other counterparts such as Random Forest or XGBoost. Needless to say, he talked about how PLSR worked.
Abdullah is a Transportation Planning and Engineering expert and he has 8+ years of experience in modeling transportation systems, leading transportation research projects, and developing web-based data management solutions. He completed his Ph.D. in Transportation Engineering at NYU and previously received his master's degree in Transportation Engineering from Florida State University. Abdullah’s experience is in traffic modeling and calibration, developing alternative traffic data collection systems, big data and analytics, GPS-based transportation data analysis, incident and emergency management, wireless sensor networks, social media analytics, and transportation geography. Abdullah has worked on several transportation design projects including New York City Connected Vehicle Pilot Project, Mobile Accessible Pedestrian Signal System, and Regional Traffic Impact Study of Newark Bay-Hudson County Extension (NBHCE) Bridge Deck Reconstruction in Jersey City, NJ.