1) ANN ARBOR AREA TRANSPORTATION AUTHORITY

2) AUSTIN TRANSIT PARTNERSHIP

3) CENTRAL OKLAHOMA TRANSPORTATION AND PARKING AUTHORITY

4) CHAMPAIGN-URBANA MASS TRANSIT DISTRICT

5) CONNECT TRANSIT

6) DES MOINES AREA REGIONAL TRANSIT AUTHORITY (DART)

7) HENNEPIN COUNTY REGIONAL RAILROAD AUTHORITY

8) HYDROGEN FUEL CELL BUS COUNCIL

9) METROPOLITAN ATLANTA RAPID TRANSIT AUTHORITY

10) NEW FLYER OF AMERICA INC.

11) REGIONAL TRANSPORTATION AUTHORITY OF CENTRAL OKLAHOMA

12) RIVERSIDE TRANSIT AGENCY

13) SACRAMENTO REGIONAL TRANSIT

14) SANTA CLARA VALLEY TRANSPORTATION AUTHORITY

15) STADLER US INC

16) UTAH DEPARTMENT OF TRANSPORTATION

17) UTAH TRANSIT AUTHORITY

18) VIRGINIA RAILWAY EXPRESS