Result: 6 cities with active trolleybussystem.
| City | County | Opened | Lines | |
|---|---|---|---|---|
| Vancouver | Kanada | 16.08.1948 | 13 | |
| Boston | USA | 11.04.1936 | 6 | |
| Dayton | USA | 23.04.1933 | 7 | |
| Philadelphia | USA | 14.10.1923 | 3 | |
| San Francisco | USA | 06.10.1935 | 14 | |
| Seattle | USA | 28.04.1940 | 14 | |
Result: 6 cities with active trolleybussystem.
| City | County | Opened | Lines | |
|---|---|---|---|---|
| Vancouver | Kanada | 16.08.1948 | 13 | |
| Boston | USA | 11.04.1936 | 6 | |
| Dayton | USA | 23.04.1933 | 7 | |
| Philadelphia | USA | 14.10.1923 | 3 | |
| San Francisco | USA | 06.10.1935 | 14 | |
| Seattle | USA | 28.04.1940 | 14 | |