Four levels of participation are available for parties interested in participating in committee business. Members are selected by the Executive Director of TRB appoints committee members for a 3-year service period. Members of a committee are selected on the basis of their interest in and ability to contribute to the study of transportation and air quality issues. Reappointment is limited by the National Academy of Sciences' requirements for substantial rotation of membership. Associates cannot vote, but do participate in all levels of committee business.
Associates serve on subcommittees, review technical papers, and help organize annual activities.
Potential committee members are usually drawn from the pool of associates. Friends of the Committee are those who want the information generated by the committee and possibly some participation in the form of peer review of annual meeting papers. Committee Monitors are those who want committee information only and do not wish to participate in the committee. To become a friend or monitor of the committee, send an email to the membership coordinator, or go to the feedback page and send in your request. To edit your address or subcommittee affiliation information, goto the Membership Roster Manager .