In 2006, CDOT initiated development of a specification for aggregates used in truck arrester beds. First, it was necessary to know what was currently in the arrester beds throughout the state. Each bed needed to be evaluated for safety, performance, and maintenance needs.
CDOT has prioritized the research of select methods to evaluate the performance of the I-25 Gap work zone and future CDOT construction projects. Work zone performance measures provide comparative metrics that quantify the level of impact a work zone has on travelers, residents, businesses and workers. CDOT has identified the need to research and apply performance measures to the I-25 Gap construction project; establishing a foundation to improve the decisions that are made during planning, design and construction for the remainder of the I-25 Gap project and for future CDOT highway construction projects.
Automated Truck-Mounted Attenuators (ATMAs) utilize technology to remove a human driver from a vehicle with a high potential for collision. This report evaluates DOT workers' perceptions of working with this automated technology, in order to identify any disconnect between operators and the ATMA system. The study objective was to 1) understand workers' acceptance and understanding of the ATMA technology; 2) Identify ATMA-worker interactions that are successful and interactions that could be improved; and 3) evaluate how various training impacts their perceptions, acceptance, and use.
