Table 2.
The correlation of various influencing factors.
| XCPRE1 | SPRE1 | XCTV | YCTV | STV | IATV | XCFOLLL1 | SFOL | |
|---|---|---|---|---|---|---|---|---|
| XCPRE1 | 1 | .545** | .969** | .716** | .087* | .658** | .981** | .331** |
| SPRE1 | .545** | 1 | .636** | .513** | .553** | .110** | .659** | .586** |
| XCTV | .969** | .636** | 1 | .641** | .183** | .573** | .987** | .287** |
| YCTV | .716** | .513** | .641** | 1 | .097** | .701** | .685** | .512** |
| STV | .087* | .553** | .183** | .097** | 1 | − .171** | .193** | .472** |
| IATV | .658** | .110** | .573** | .701** | − .171** | 1 | .577** | .134** |
| XCFOL1 | .981** | .659** | .987** | .685** | .193** | .577** | 1 | .381** |
| SFo1 | .331** | .586** | .287** | .512** | .472** | .134** | .381** | 1 |
PRE1, the vehicle preceding the target vehicle; XCPRE1, the x-coordinate of PRE1; SPRE1, the speed of PRE1.
**Statistically significantly correlated at the .01 level; *Statistically significantly correlated at the .05 level.