1) Alameda-Contra Costa Transit District

2) City of Irvine, CA

3) City of Palo Alto, California

4) City of Rancho Cucamonga, CA

5) City of Tempe, Arizona

6) City of Torrance, CA

7) Clark County Public Transportation Benefit Area dba C-Tran

8) County of Orange, California

9) County of Sonoma, CA

10) CRH Americas Materials, Inc.

11) Dallas Area Rapid Transit (DART)

12) Greater Cleveland Regional Transit Authority

13) Napa County, CA

14) National Asphalt Pavement Association

15) Port of Oakland

16) San Diego County

17) Santa Clara Valley Transportation Authority

18) Sonoma-Marin Area Rail Transit District

19) Tampa Bay Area Regional Transit Authority

20) Washington County, Oregon

21) Wayne County Airport Authority