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
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.
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.
Ahmed, Usman & Hawkins, Jason (2026). Residential Price Modeling Using Spatially Validated Machine Learning Methods: A Comparison Across Geographical Contexts. Transportation Research Record, 03611981261457410.
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.
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, 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 (2023). Joint and sequential models for freight vehicle type and shipment size choice. Transportation, 50, 1613–1629.
Ahmed, Usman, Hawkins, Jason, & Roorda, Matthew J (2022). Establishment location choice model considering intra-firm interactions. Journal of Transport Geography, 102, 103391.
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 & 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.
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, Nourinejad, Mehdi, & Roorda, Matthew. (2022). A Tour-Based Model using Continuous Approximation Method. Transportation Research Board Annual Meeting.
Ahmed, Usman, Hawkins, Jason, & Roorda, Matthew J (2022). Establishment Location Choice Model Considering Firm Membership. Canadian Transportation Research Forum 57th Annual Conference.
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 & 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.