6. Conclusion

The results of the 2011 WZ SA show continued progress nationally toward implementation of the work zone best practices identified in the WZ SA. The 2011 WZ SA national average rating of 10.3 represents a three percent increase over the 2010 national average of 10.0. This increase is based on increases in average ratings for 38 agencies (73 percent). This increase continues a steady trend over the nine years the WZ SA has been conducted.

In addition to the quantitative results, this report shares specific examples cited by various agencies in written comments they submitted to support their numeric ratings. FHWA encourages agencies to consider implementing some of these good practices from other agencies to enhance their own practices. FHWA continues to promote sound work zone management practices that can lead to reduced congestion and delay while improving safety in and around work zones. As a means of sharing these good examples further, FHWA will also review these examples for possible inclusion in future outreach and guidance documents.

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