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Economic Affects of Access Management Techniques (Medians) in North Carolina

2009 Study by NC State and UNC on the economic effects of medians. Full Report: http://digital.ncdcr.gov/cdm/ref/collection/p249901coll22/id/221356

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Economic Affects of Access Management Techniques (Medians) in North Carolina

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  1. Go4Progress on Lewisville-Clemmons Road: Economic Effects of Access Management Techniques (Raised Medians) in North Carolina

  2. Research Methods • Joint project (2009) of the NC State Institute for Transportation Research & Education and UNC Highway Safety Research Center • Studied perceptions of business owners and managers related to the effects of raised medians • Sixteen sites were studied – 8 median treatment sites and 8 comparison sites without medians • Corridors at least 0.25 miles long • Construction occurred between 2003 and 2008 • Moderately high traffic • Moderately high business density • 789 North Carolina businesses (predominantly retail and services) were surveyed • Similar “comparison” sites were surveyed; these sites do not have raised medians and are their survey results are used in lieu of “before responses” from the treatment sites • After controlling for economic factors, results are statistically significant at 95% confidence interval

  3. Study Sites * Albemarle Rd was subsequently eliminated from the study group as having unique circumstances that make it an outlier.

  4. Business Mix at Study Sites

  5. Economic Effects • There was no statistically significant difference in self-reported revenue changes between comparison and median treatment sites • The median did not affect customers as severely as owners originally thought • The single-location local business was the only business type that had a statistically significant difference in perceived revenue decreases due to the economy and the median • Median treatment corridors typically had more new or vacant locations than their comparison sites (some business closed or moved before the final survey) • Conversely, a high occurrence of new businesses points to positive economic activities at the median treatment sites.

  6. Other Effects • Median treatment sites were much more likely to indicate positive safety benefits than comparison sites. • The median did not affect customer accessibility (to the store) as severely as originally thought • 62% of treatment respondents at treatment sites ranked accessibility as 4th, 5th, or 6th; only 15% of business owners and managers at treatment sites actually ranked accessibility as the number one consideration of customers at their businesses • 71% of median treatment sites responses said operations had improved or stayed the same • 64% of business responses said safety had improved or stayed the same following construction

  7. Survey Results

  8. Survey Results: Monthly Revenue Change

  9. Survey Results: Decrease in Monthly Revenue - Causality

  10. Survey Results: Primary Cause for Decrease in Monthly Revenue by NAICS

  11. Survey Results: Percentage of New/Vacant Locations

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