| Case | Effective factors (considered) | Number of rules | R2 |
| 1 | Speed | 4 | 0.56 |
| 2 | 1) Speed 2) volume of light non-passenger car vehicles | 20 | 0.65 |
| 3 | 1) Speed 2) Volume of light non-passenger car vehicles 3) Volume of heavy vehicles | 100 | 0.7 |
| 4 | 1) Speed 2) Volume of light non-passenger car vehicles 3) Volume of heavy vehicles 4) Volume of passenger cars | 500 | 0.72 |
| 5 | Volume of light non-passenger car vehicles | 5 | 0.48 |
| 6 | Volume of heavy vehicles | 5 | 0.42 |
| 7 | Volume of passenger cars | 5 | 0.45 |
| 8 | 1) Speed 2) Volume of heavy vehicles | 20 | 0.62 |
| 9 | 1) Speed 2) Volume of passenger cars | 20 | 0.58 |
| 10 | 1) Speed 2) Volume of light non-passenger car vehicles 3) Volume of passenger cars | 100 | 0.67 |