| Actual stations | Expected number of stations based on | |||||
|---|---|---|---|---|---|---|
| Proposed | Existing | DVMT | SITE | CRASH | ||
| Highway class | Rural interstates | 13 | 8 | 15 | 15 | 6 |
| Urban interstates | 10 | 7 | 14 | 6 | 4 | |
| Rural U.S. roads | 7 | 15 | 5 | 8 | 7 | |
| Urban U.S. roads | 2 | 3 | 1 | 2 | 3 | |
| Rural state roads | 4 | 12 | 2 | 6 | 15 | |
| Urban state roads | 2 | 1 | 1 | 1 | 3 | |
| p-value | Proposed program | 0.052 | 0.262 | 0.001 | ||
| Existing program | 0.001 | 0.001 | 0.114 | |||