Evaluation of life cycle impacts of intersection control type selection [final report].

NCDOT Project 2014-11
The methodology provided in this report provides guidance for NCDOT conversions of two‐way
stop controlled intersections to other intersection types to enhance the effective allocation of
public funds. The findings of this project have been incorporated into the study’s primary
deliverable, the spreadsheet‐based NCDOT Intersection Life Cycle Cost Comparison Tool, which
combines enhanced HCM 2010 methodologies and standard cost benefit analysis methodologies
to calculate the long‐term net benefits of converting a two‐way stop controlled intersections to
three different intersection options: 1) all‐ way stop controlled, 2) signalized, and 3) roundabout
types. This deliverable is designed for use during the planning phase of potential intersection
conversion projects to help stakeholders identify the most cost‐effective conversion
configuration option. This report summarizes the findings of all project tasks.