| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| national transportation research board | 0.21 | 0.8 | 7791 | 49 | 38 |
| national | 0.16 | 0.3 | 1844 | 42 | 8 |
| transportation | 1.52 | 0.8 | 6179 | 15 | 14 |
| research | 1.34 | 0.5 | 1979 | 57 | 8 |
| board | 0.44 | 0.9 | 7483 | 97 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| national transportation research board | 0.58 | 0.9 | 8692 | 72 |
