In-Service Performance Evaluation: Guidelines for the Assembly and Analysis of Data
An "in-service performance evaluation" (ISPE) examines roadside safety
features while roads are in service. A database of crashes is generally the minimum resource
necessary for conducting an ISPE.
The TRB National Cooperative Highway Research Program's
NCHRP Research Report 1010:
In-Service Performance Evaluation: Guidelines for the Assembly and Analysis of Data
presents uniform criteria for conducting ISPEs of both permanent and temporary safety features.
Supplemental to the report are
NCHRP Web-Only Document 332: Multi-State In-Service Performance Evaluations of Roadside Safety Hardware, which documents the development of the guidelines and the entire research effort; the
ISPE Data Set and Analysis Template, a spreadsheet tool to aid in the calculations of each evaluation measure shown in this report and to support the documentation of an ISPE;
Implementation of Research Findings and Products, a plan that identifies mechanisms and channels for implementing this research; and a
presentation that summarizes the project.
This Summary Last Modified On: 9/30/2022