Mile Marker | Sample Size | Mean Speed (MPH) | Standard Deviation (MPH) | p-value | Significant reduction in mean speeds | |||
Before | After | Before | After | Before | After | |||
147.0 - 146.9 | 11,946 | 11,729 | 71.97 | 72.46 | 7.67 | 6.68 | 1.000 | - |
146.9 - 146.8 | 12,036 | 11,764 | 72.16 | 72.39 | 7.43 | 6.82 | 0.995 | - |
146.8 - 146.7 | 11,983 | 11,747 | 72.35 | 72.43 | 7.36 | 7.03 | 0.792 | - |
146.7 - 146.6 | 11,944 | 11,833 | 72.22 | 72.09 | 7.59 | 7.36 | 0.09 | - |
146.6 - 146.5 | 11,988 | 11,770 | 72.26 | 72.26 | 7.37 | 7.09 | 0.515 | - |
146.5 - 146.4 | 11,928 | 11,716 | 72.38 | 72.64 | 7.42 | 6.70 | 0.998 | - |
146.4 - 146.3 | 11,986 | 11,748 | 72.01 | 72.41 | 7.72 | 6.72 | 0.999 | - |
146.3 - 146.2 | 12,033 | 11,814 | 71.55 | 72.10 | 8.33 | 7.18 | 1.000 | - |
146.2 - 146.1 | 11,923 | 11,636 | 71.20 | 71.55 | 9.04 | 7.79 | 0.999 | - |
146.1 - 146.0 | 11,029 | 10,774 | 71.91 | 71.77 | 8.78 | 7.36 | 0.093 | - |
146.0 - 145.9 | 11,015 | 10,956 | 71.83 | 70.37 | 8.59 | 7.85 | <0.001 | Yes |
145.9 - 145.8 | 11,035 | 11,340 | 71.66 | 68.46 | 8.77 | 8.16 | <0.001 | Yes |
145.8 - 145.7* | 11,122 | 11,380 | 71.49 | 67.70 | 8.89 | 8.26 | <0.001 | Yes |
145.7 - 145.6 | 11,945 | 12,147 | 70.66 | 67.27 | 9.57 | 8.59 | <0.001 | Yes |
145.6 - 145.5 | 11,894 | 12,062 | 70.65 | 67.64 | 9.83 | 8.76 | <0.001 | Yes |
145.5 - 145.4 | 12,038 | 11,988 | 69.96 | 67.32 | 10.52 | 9.29 | <0.001 | Yes |
145.4 - 145.3 | 12,005 | 11,925 | 69.82 | 67.39 | 10.21 | 9.41 | <0.001 | Yes |
145.3 - 145.2 | 11,939 | 11,842 | 70.17 | 67.72 | 9.99 | 9.51 | <0.001 | Yes |
145.2 - 145.1 | 11,855 | 11,667 | 70.30 | 67.92 | 10.07 | 9.61 | <0.001 | Yes |
145.1 - 145.0 | 11,684 | 11,546 | 70.65 | 68.38 | 9.79 | 9.46 | <0.001 | Yes |