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Count by Type of Data and Vehicle Market (one study that presented results from two different surveys is counted twice in this table, and the two literature reviews are not included).
| Vehicles Included | Revealed Preference | Stated Preference | RP & SP | Market Individual | Market Aggregated | Total |
|---|---|---|---|---|---|---|
| New | 5 | 14 | 3 | 15 | 3 | 40 |
| Used | 0 | 0 | 0 | 2 | 0 | 2 |
| Both | 4 | 2 | 0 | 3 | 0 | 9 |
| Total | 9 | 16 | 3 | 20 | 3 | 51 |
