Our staff include:

John Douglas Hunt
John E. Abraham
Alan T. Brownlee
Kevin J. Stefan
Geraldine Fuenmayor
Graham Hill
Amila Silva
J.D. Paul McMillan

Company Principals

JD Hunt. Calgary.2011.03 J. Douglas Hunt Ph.D., P.Eng. is an internationally recognized and widely published expert in land use and transport interaction modelling, having more than 25 years of experience in transportation demand modelling and land use transport interaction modelling in Europe, the United States, and Canada. Dr. Hunt’s special expertise is in the design and calibration of these models, developing them so that they can be used to examine policy alternatives involving such things as infrastructure development, alterations in land use regulations, changes in transportation conditions (including operations, tariffs and user costs) and new economic and fiscal arrangements. In addition to his role in HBA Specto, Dr. Hunt is a Professor of Transportation Engineering at the University of Calgary.

JEA Summer 2011 John Abraham Ph.D., P.Eng. has 20 years of experience in developing and calibrating spatial economic and travel demand models. Dr. Abraham has expertise in developing and calibrating models to provide computer simulations that are both accurate and practical for analyzing policy and scenarios. He is an expert on survey techniques for understanding preferences, measuring trade off rates, and predicting behaviour. Dr. Abraham can quickly program advanced modelling techniques into software due to his strong mathematical and statistical background and his knowledge of algorithms and data structures. He is an expert software architect with a focus on object-oriented design, and the lead developer of the PECAS land use modelling software.

Alan Brownlee picture Alan Brownlee Ph.D., P.Eng. has more than 35 years of experience in Canada, the U.S. and the United Kingdom in developing and applying advanced travel demand models. Dr. Brownlee specializes in the areas of travel forecasting, assessment of transportation needs, and development of transportation plans for urban areas. Prior to joining HBA Specto he worked for the City of Edmonton for more than 27 years, as the leader of the travel modelling and data collection group. He had a key project management role in the development of the current California Statewide Travel Demand Model.

Transportation Modelling Specialists

Kevin J. Stefan
, P.Eng. has over 10 years of transportation engineering experience, including over seven years with the City of Calgary as a Transportation Engineer in the Forecasting division of Transportation Planning. While there, Mr. Stefan worked primarily on model development work, including the data preparation, estimation, calibration and validation of a tour-based micro-simulation commercial vehicle model. He was recently instrumental in the development of an activity-based travel model for the State of California and the commercial vehicle model for San Diego. Mr. Stefan is an expert on the estimation, calibration and application of tour-based travel micro-simulation models, with expert knowledge of Python programming.

Geraldine Fuenmayor, is an urban and transportation planner with experience in the application of transportation and land use forecasting models in the evaluation of transportation needs, and in the evaluation of land use and transportation projects and policies. Project responsibilities have involved data analysis and model estimation, geo-database development and management, calibration routines and process formalization. Recent work has focused on housing inventories, housing use, and analysis of data on space development. Geraldine has worked for Modelistica and the Central University of Venezuela and completed a research internship at CIRRELT (Université de Montréal)

Graham Hill is a part-time employee at HBA Specto Incorporated and an M.Sc. student at the University of Calgary. He learned about the PECAS framework while studying for his B.Sc. and since joining HBA Specto in 2010 has continued to develop and apply this knowledge. His projects at HBA have included developing a more robust calibration method for land use models, which is also the subject of his current research as a master’s student, as well as contributions to the California Statewide Travel Demand Model, the Oregon TLUMIP model, and the Atlanta regional model. He specializes in the mathematical theory behind the models as well as software development and coding, and has experience with the practical aspects of building and calibrating transportation and land use models. He can also read and write in Spanish after his completion of a minor in Spanish during his undergraduate studies.

Amila Silva has a PhD in transportation engineering from University of Calgary. He has been working with HBA Specto since 2013. He has been involved in development of number of PECAS spatial economic models, and has worked in developing the Alberta PECAS 1.0 model from the beginning of the project. He has an MSc in transport engineering from University of Moratuwa. During his MSc, he developed a model to manage national road network data using GIS.

J.D. Paul McMillan has more than 20 years of work in engineering and related areas establishing a broad range of interdisciplinary knowledge of civil engineering, computer modelling, computer hardware and software, and employee supervision; experience in marketing, behavioural modelling and data collection in conjunction with strong written, computer and interpersonal skills. His experience includes extensive work on the City of Calgary EMME-based RTM model.