Highway Capacity Manual 2010
KAI led the development of the most recent edition of the Highway Capacity Manual (HCM) which is more directly relevant to the system and facility planning and design needs of engineers and planners in 2010. This edition of the HCM incorporates more than $5 million in research completed since 2000, and spans the entire coverage of the manual. The HCM 2010 incorporates an integrated multimodal approach, allowing analysts to simultaneously assess the performance of facilities with respect to automobiles, transit, pedestrians, and bicycles. The HCM 2010 also has an expanded discussion of the use of alternative tools, such as simulation. In addition to chapter preparation, the KAI-led team conducted research on a new speed-flow curve for basic freeway segments, gap acceptance parameters for two-way stop-controlled intersections on six-lane streets, and integration of actuated control and a new delay methodology into the signalized intersection procedure. Additionally, the project team developed a website to facilitate research report and draft chapter review by the project panel and by members and friends of the TRB Committee on Highway Capacity and Quality of Service. KAI, through its Tucson office (the former Catalina Engineering), also produced the Highway Capacity Manual 2000, which is TRB’s best-selling document and a fundamental reference document for transportation engineers.