Committee Members
SIMPO Policy Committee Members
| Gary Williams | City of Carbondale |
| Bradley Robinson | City of Carterville |
| Steve Fratini | City of Herrin |
| Mike Absher | City of Marion |
| Julie Peterson | Jackson County |
| Tim Atkisson | Williamson County |
| Ron Mitchell | Villages Under 5,000 in population |
| Adam Lach | RIDES Mass Transit |
| Carrie Nelsen | IDOT District 9 |
SIMPO Technical Advisory Committee Members
| Molly Maxwell | City of Carbondale |
| Donnie Smoot | City of Carterville |
| Tom Somers | City of Herrin |
| Doug Phillips | City of Marion |
| Mitch Burdick | Jackson County |
| Travis Emery | Williamson County |
| Vacant | Villages Under 5,000 in population |
| Shawn Freeman | Jackson County Mass Transit District |
| Jay Kranz | IDOT District 9 |