What we do and what we believe

We are a small group of uniquely qualified professionals who conduct rigorous safety research, leverage new knowledge to create safety innovations, and experimentally test safety innovations on actual construction sites. All our work has withstood the rigors of peer-review before being offered to the industry. We believe that construction workers deserve the highest standards and that 'good ideas' are simply not enough. Our position is that safety beliefs are hypotheses to be tested, not truths to be guarded. 


 In a world of safety celebrities, we aim to be the safety authority. 

Our Team

Dr. Matthew Hallowell

Executive Director

Dr. Matthew Hallowell is a President’s Teaching Scholar and Endowed Professor of Construction Engineering at the University of Colorado at Boulder. He earned a BS and MS in Civil Engineering and a PhD with a focus on Construction Engineering and Occupational Safety and Health. Before his academic career, he worked in construction as a laborer, project engineer, and quality inspector.


Dr. Hallowell specializes in construction safety research, with an emphasis on the science of safety. He has published extensively on energy-based hazard recognition, safety leading indicators, safety risk assessment, predictive analytics, and precursor analysis. For his research, he has received the National Science Foundation CAREER Award and the Construction Industry Institute Outstanding Researcher Award.

Dr. Antoine Tixier

Senior Research Scientist

Dr. Antoine Tixier is the tech specialist at Safety Function, leading the Safety AI R&D activities. He earned a MS in Mechanical and Electrical Engineering, and a MS and PhD in Civil Engineering, with a focus on data-driven, quantitative construction safety. Dr. Tixier worked as a city engineer and site manager, and was trained in gas and arc welding and machining.

​Prior to joining Safety Function, Dr. Tixier was a researcher and lead teaching assistant for 5 years at the computer science department of Polytechnic Paris. He specialized in machine learning and deep learning for natural language processing and network analysis. Dr. Tixier has published more than 20 papers in international peer-reviewed journals and conferences, both in the construction domain and the general AI domain, and has designed and delivered close to a hundred hours of AI programming lab sessions to CS graduates.

© 2020 by the Colorado Construction Safety Laboratory, LLC