The Steering Committee and the Technical Advisory Committee will guide the study effort. The following jurisdictions and agencies are represented on the committees:
- Caltrans, District 7
- City of Alhambra
- City of Glendale
- City of La Cañada Flintridge
- City of Monterey Park
- City of Pasadena
- City of San Marino
- City of South Pasadena
- L.A. County Board of Supervisors, District 1
- L.A. County Board of Supervisors, District 5
- City of Los Angeles
- L.A. County Metropolitan Transportation Authority (Metro)
- San Gabriel Valley Council of Governments
- Southern California Association of Governments