Publications
Please see my Google Scholar profile for citation metrics; please contact me if you would like to learn more about our work.
Patents
Shoman, Maged & Ahmed, Usman (2025). Multimodal Computer Vision System and Method for Real-Time Navigation Assistance for Visually Impaired Pedestrians. US Provisional Patent App. 63/917,447.
Journal Articles
Asmussen, Katherine E. & Ahmed, Usman (2026). How is online shopping reshaping activity patterns? Modeling activity behavior using discrete continuous models. Transportation Research Part A: Policy and Practice, 212, 105177.
Ahmed, Usman & Hawkins, Jason (2026). Residential Price Modeling Using Spatially Validated Machine Learning Methods: A Comparison Across Geographical Contexts. Transportation Research Record, 03611981261457410.
Ghizzawi, Farah, Ahmed, Usman, & Roorda, Matthew J (2026). Parking patterns of last-mile delivery vehicles: a comparison between light-duty trucks and electric cargo tricycles in downtown Toronto. Transportation Research Interdisciplinary Perspectives, 37, 101941.
Amaral, Julia, Holguin-Veras, Jose, Roorda, Matthew J, others, Ahmed, Usman, & others (2026). Freight trip generation in metropolitan areas: an international perspective. Transportation Research Part A: Policy and Practice, 204, 104847.
Saeedi, Milad, Xu, Junshi, Ahmed, Usman, Roorda, Matthew, & Hatzopoulou, Marianne (2025). Urban Air Pollution Data Collection, Mapping, and Prediction Using Mobile Sensors Installed on Courier Trucks. Transportation Research Record, 2679, 236–250.
Ahmed, Usman, Mousavi, Kianoush, Zhang, Shang, & Roorda, Matthew J (2025). Noise impacts and social justice analysis of off-peak deliveries in the Greater Toronto Area. Transport Policy, 167, 66–77.
Rivera-Gonzalez, Carlos, Ahmed, Usman, & Roorda, Matthew J (2025). The evolving landscape of urban logistics: A study of the Greater Golden Horseshoe. Journal of Transport Geography, 122, 104055.
Ahmed, Usman & Roorda, Matthew J (2023). Joint and sequential models for freight vehicle type and shipment size choice. Transportation, 50, 1613–1629.
Ahmed, Usman, Tu, Ran, Xu, Junshi, Amirjamshidi, Glareh, Hatzopoulou, Marianne, & Roorda, Matthew J (2023). GPS-based traffic conditions classification using machine learning approaches. Transportation research record, 2677, 1445–1454.
Ahmed, Usman & Moeckel, Rolf (2023). Impact of life events on incremental travel behavior change. Transportation research record, 2677, 594–605.
Ahmed, Usman & Roorda, Matthew J (2022). Modeling freight vehicle type choice using machine learning and discrete choice methods. Transportation Research Record, 2676, 541–552.
Ahmed, Usman & Roorda, Matthew J (2022). Modelling carrier type and vehicle type choice of small and medium size firms. Transportation Research Part E: Logistics and Transportation Review, 160, 102655.
Hawkins, Jason, Ahmed, Usman, Roorda, Matthew, & Habib, Khandker Nurul (2022). Measuring the process of urban gentrification: A composite measure of the gentrification process in Toronto. Cities, 126, 103708.
Ahmed, Usman, Hawkins, Jason, & Roorda, Matthew J (2022). Establishment location choice model considering intra-firm interactions. Journal of Transport Geography, 102, 103391.
Xu, Junshi, Tu, Ran, Ahmed, Usman, Amirjamshidi, Glareh, Hatzopoulou, Marianne, & Roorda, Matthew J (2021). An eco-score system incorporating driving behavior, vehicle characteristics, and traffic conditions. Transportation Research Part D: Transport and Environment, 95, 102866.
Ahmed, Usman, Moreno, Ana Tsui, & Moeckel, Rolf (2020). Microscopic activity sequence generation: a multiple correspondence analysis to explain travel behavior based on socio-demographic person attributes. Transportation, 48, 1481–1502.
Conference Papers
Ahmed, Usman, Le, Tho V, & Roorda, Matthew J (2024). An Urban Freight Model Considering Intra-firm and Supply Chain Relationships. 103rd Annual Meeting of the Transportation Research Board.
Moreno, Ana Tsui, Nouli, Georgina, Ahmed, Usman, Schiffer, Maximilian, & Moeckel, Rolf (2023). Understanding the Impact of Life Events on Travel Behavior Change via Machine Learning. Euro Working Group Transportation 2023.
Ahmed, Usman & Roorda, Matthew J (2022). Freight Vehicle Type and Shipment Size Modelling Using Discrete Choice Methods. Canadian Transportation Research Forum 57th Annual Conference.
Ahmed, Usman, Hawkins, Jason, & Roorda, Matthew J (2022). Establishment Location Choice Model Considering Firm Membership. Canadian Transportation Research Forum 57th Annual Conference.
Ahmed, Usman, Nourinejad, Mehdi, & Roorda, Matthew. (2022). A Tour-Based Model using Continuous Approximation Method. Transportation Research Board Annual Meeting.
Ahmed, Usman & Roorda, Matthew J (2021). Freight Vehicle Type Choice Model using Random Forest Classification. CTRF 56th Annual Conference-Ensuring Resilience in Transportation Systems: Anticipating and Responding to Pandemic, Climate, Demographic and Economic Changes.
Xu, Junshi, Tu, Ran, Ahmed, Usman, Amirjamshidi, Glareh, Hatzopoulou, Marianne, & Roorda, Matthew (2021). How to Fairly Evaluate Eco-Driving? An Eco-Score System Developed Using Vehicle Characteristics and Traffic Conditions. CTRF 56th Annual Conference-Ensuring Resilience in Transportation Systems: Anticipating and Responding to Pandemic, Climate, Demographic and Economic Changes.
Rivera-Gonzalez, Carlos, Ahmed, Usman, & Roorda, Matt (n.d.). The Evolving Landscape of Urban Logistics: A Study of the Greater Toronto and Hamilton Area. Book of Abstracts 5th VREF Conference on Urban Freight.
Preprints
Rashidi, Hesam, Ahmed, Usman, Ghizzawi, Farah, Nourinejad, Mehdi, & Roorda, Matthew J (n.d.). Data-driven Tour Duration Estimation in Last-Mile Logistics Considering Driver Preferences. Available at SSRN 5602000.
Thesis
Ahmed, Usman (2022). Doctoral dissertation: “An Agent-Based Freight Business and Logistics Decisions Simulation: FREBUILDS.” University of Toronto (Canada).
Ahmed, Usman, Moeckel, Rolf, & Chou, Ana Tsui Moreno (2018). Master’s thesis: “Development of a microscopic acitivity sequence modeler.” Technical University of Munich.