| Comparison US States | Space Mean Speed Difference Threshold (ST) | Sample Size | Median Space Mean Speed (mph) | Standard Deviation (mph) | P-value | Statistically Significant | ||||
| State 1 (S1) | State 2 (S2) | S1 | S2 | S1 | S2 | S1 | S2 | |||
| IL | IN | 2 | 3475 | 6012 | 65.6 | 64.9 | 7.1 | 8.7 | <0.001 | Yes |
| OH | IN | 1 | 6432 | 6012 | 65.3 | 64.9 | 5.2 | 8.7 | <0.001 | Yes |
| IN | PA | 2 | 6012 | 4865 | 64.9 | 63.3 | 8.7 | 5.2 | <0.001 | Yes |