Guide for Intersection Control Evaluation

Intersection control evaluation (ICE) is fundamentally a process that provides the framework, steps, and tools and offers decision support for assessing trade-offs between different types of intersection forms and controls.

NCHRP Research Report 1087: Guide for Intersection Control Evaluation, from TRB's National Cooperative Highway Research Program, defines intersection form as the physical layout of the intersection and intersection control as the traffic control device used to govern movements for vehicles, pedestrians, and bicyclists. For example, in the case of a modern roundabout, “form” refers to the circular shape, while “control” refers to yield control at entry.

Supplemental to the report are NCHRP Web-Only Document 377: Background and Development of a Guide for Intersection Control Evaluation and nine Excel-based spreadsheet tools developed in conjunction with the guide to help practitioners organize and document an ICE evaluation and perform specific analyses: Intersection Control Evaluation (ICE) Process Tool, Capacity Analysis for Planning of Junctions (CAP-X) Tool, Planning and Preliminary Engineering Applications Guide Tool for Intersection Control Evaluation (PPEAG ICE Tool), EquityAssessment Tool, Design Flags Calculator Tool, SSI Score Calculator Tool—Intersection, SSI Score Calculator Tool—Interchange, Safety Performance for Intersection Control Evaluation (SPICE), and Life-Cycle Cost Estimating Tool (LCCET). The report and supplements are available from the Transportation Resaerch Board web site at https://www.trb.org/Main/Blurbs/183161.aspx