Take a look at Nashville's MPO site. It is comprehensive and encourages public involvement. Seems like they have learned it is much more productive to talk to people instead of talk at them. OBEY THE RULES OF THE ROAD OR ELSE!!!!! sorry I digress:)
Nashville MPO Public Participation
As a public agency, the Nashville Area MPO encourages members of the public to participate in the development of regional transportation plans and programs and in meetings of the Executive Board and its Technical Coordinating Committee.