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Table 3 GN number before and after the application of shot blasting
From: Road safety audit on a major freeway: implementing safety improvements
April 2010 | June 2010 | July 2010 | November 2010 | |
|---|---|---|---|---|
site1 | 0.32 | 0.56 | 0.44 | 0.49 |
site2 | 0.36 | 0.56 | 0.45 | 0.62 |
site3 | 0.36 | 0.56 | 0.54 | 0.42 |
site4 | 0.34 | 0.57 | 0.47 | 0.50 |