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Bringing Back-of-the-Envelope Back – Introducing the new HCM Planning and Preliminary Engineering Applications Guide (PPEAG)

The Highway Capacity Manual (HCM) 6th Edition incorporates the results of millions of dollars of national, peer-reviewed research that has occurred since the publication of the HCM 2010. This edition of the HCM introduces a number of new capabilities, including travel time reliability forecasting, alternative intersections analysis, managed lane analysis, and work zone analysis. It also updates a number of existing methodologies, including those for freeway facilities and roundabouts.

The HCM is commonly used by transportation agencies to evaluate the current or forecast operations of roadway facilities. However, it is less well known that the HCM can also be used to cost-effectively and reliably support agencies’ planning, programming, and management decisions. The new Planning and Preliminary Engineering Applications Guide to the HCM (“Guide”) was developed in parallel with the HCM 6th Edition to demonstrate how HCM methods can be adapted to the larger study areas and less-precise, less-available data typical of planning and preliminary engineering studies. This webinar recording will explore the contents of the Guide, and will illustrate through case studies how back-of-the-envelope methods and simple spreadsheets can be applied to a variety of planning studies. The Guide’s methods support quick, objective analyses whose results with be consistent with those of more-detailed HCM operational analyses occurring at a later stage of project development.

Learning Objectives

  • Describe what “planning” and “preliminary engineering” mean in an HCM context
  • Understand why the Guide was developed, its intended audience, and its general structure
  • Identify the planning tasks to which HCM methods can potentially be applied
  • Learn about the case studies provided in the Guide and how they demonstrate the application of HCM planning methods to a variety of planning tasks
Instructors' Names, Bios and PDF Presentations can be found by clicking the recording link below.  Once you click the recording below, click the "resources" tab to locate the PDF (after purchasing).