Analysis Periods | Variable | Mean | Standard deviation | Minimum | Maximum |
All months | Crash count | 1.544 | 1.899 | 0 | 11 |
CMH | 11.714 | 11.819 | 1.026 | 76.508 | |
QMH | 1.332 | 2.576 | 0 | 16.538 | |
AADT | 28,677 | 6740 | 1670 | 42,700 | |
TTI | 1.005 | 0.021 | 0.979 | 1.189 | |
Speed deficit | −0.043 | 1.425 | −1.966 | 11.034 | |
Work zone months only | Crash count | 0.6542 | 1.1720 | 0 | 11 |
CMH | 4.349 | 7.0149 | 0.0107 | 50.499 | |
QMH | 1.295 | 2.241 | 0.0105 | 16.134 | |
AADT | 28,815 | 6514 | 14,600 | 42,700 | |
TTI | 1.005 | 0.0316 | 0.9743 | 1.208 | |
Speed deficit | −0.146 | 1.764 | −1.966 | 11.034 | |
Non-work zone months only | Crash count | 0.879 | 1.384 | 0 | 10 |
CMH | 7.279 | 7.254 | 0.602 | 55.793 | |
QMH | 1.159 | 2.713 | 0.008 | 16.134 | |
AADT | 28,815 | 6514 | 14,600 | 42,700 | |
TTI | 1.006 | 0.0169 | 0.989 | 1.185 | |
Speed deficit | 0.060 | 0.969 | −1.204 | 10.232 |