| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what is the standard railroad gauge | 0.29 | 0.2 | 7638 | 12 |
| us standard railroad gauge | 1.23 | 0.7 | 3730 | 80 |
| standard gauge railroad | 1.19 | 1 | 7198 | 2 |
| standard gauge railroad track width | 0.62 | 0.8 | 4302 | 11 |
| what is a standard gauge of railroad track | 1.95 | 0.6 | 1319 | 11 |
| model railroad standard gauge | 1.78 | 0.1 | 7857 | 53 |
| what is the us standard railroad gauge | 0.97 | 0.9 | 6323 | 78 |
| width of standard gauge railroad tracks | 1.97 | 0.9 | 5958 | 27 |
| standard railway gauge | 1.07 | 0.8 | 4495 | 24 |
| standard railroad gauge usa | 0.56 | 0.8 | 3734 | 28 |
| standard railroad gauge width | 1.09 | 0.1 | 8753 | 60 |
| standard railway gauge uk | 0.61 | 0.3 | 4308 | 38 |
