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                        Intersection Safety: A Manual for Local Rural Road Owners


            
            In This Section
        Local and Rural Road Safety Program
                Training, Tools, Guidance and Countermeasures for Locals Practitioners
                Crash Facts
                
                5. Evaluation
It is important to evaluate intersection safety treatments after installation to determine their effectiveness. The effort that goes into conducting the assessment will help guide future decisions regarding intersection countermeasures.

A record of crash histories, if available, and countermeasure installations forms the foundation for assessing how well implemented strategies have performed. It is important to keep a current list of installed intersection countermeasures with documented "when/where/why" information. Periodic assessments will provide the necessary information to make informed decisions on whether each countermeasure contributed to an increase in safety, whether the countermeasure could or should be installed at other locations, and which factors may have contributed to the strategy's success.

To perform the assessment it is necessary to collect the required information for a period of time after strategies were deployed at the intersection. The time period varies, but should be no less than one full year (with 3 years preferred). The information required may consist of public input and complaints, police reports, and observations from maintenance crews. The most important information is crash data before and after implementation.

It is important to keep the list of strategy installations up to date since it will serve as a record of countermeasure history. By using this type of system, assessment dates can be scheduled to review the crashes and other pertinent information at intersections where treatments have been installed (see Table 4).

**Action**: Develop a spreadsheet to track future safety project installations and record 3 years of "before" crash information at those locations.



**Table 4. Example Spreadsheet to Monitor Countermeasure Application History and Crash/Observational Data**
	Intersection
			Specific Location
			Type of Countermeasure Installed
			Date Installed
			Date Removed (If Appl.)
			Comments
			3 Years Prior to Installation
			1 Year After InstallationNumber of Public Comments
			Number of Crashes
			Number of Near Misses
			Number of Public Comments
			Number of Crashes
			Number of Near MissesMiddlebrook Pike and Waples Mill Road
			Waples Mill – West Approach
			STOP Sign
			12/19/2009
			empty cell
			Sign was old and faded
			0
			0
			0
			empty cell
			empty cell
			empty cellRt 123 and Fox Mill Road
			Fox Mill Road – South Approach
			Stop Bars
			7/9/2008
			empty cell
			empty cell
			5
			0
			1
			2
			0
			0Route 657 and Glade Drive
			Route 657 – East Approach
			Traffic Island at Stop Approach
			6/4/2008
			empty cell
			empty cell
			2
			2
			3
			0
			0
			2Route 657 and Clifton Road
			Clifton Run – North Approach
			Added Left-turn Lane
			8/8/2007
			empty cell
			empty cell
			4
			1
			3
			1
			0
			0
      
  Book traversal links for 5. Evaluation
      ‹ 4. Countermeasures
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                    6. Summary ›
                
                Book:Intersection Safety: A Manual for Local Rural Road Owners
              1. Introduction and Purpose
                2. Identifying Safety Issues
                3. Safety Analysis
                4. Countermeasures
                5. Evaluation
                6. Summary
                Appendix A – Resources and References
                Appendix B – MUTCD Compliance Issues at Rural, Two-Way Stop-Controlled Intersections U.S. DEPARTMENT OF TRANSPORTATION

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