Request for Proposals Commuting in America IV The American Association of State Highway and Transportation Officials (AASHTO) invites proposers to submit proposals responding to a Request for Proposals (RFP) for the Census Transportation Planning Products (CTPP) Program Commuting in America (CIA) IV project. Responses to this RFP are due January 10, 2012 To download the RFP go to: http://ctpp.transportation.org/Pages/proposalcia.aspx