Task 50, FY 1992, "White Paper on the Feasibility of Longer Combination Vehicles (LCV)" (Dr. Michael D. Meyer, Dr. Harry S. Cohen, and Dr. Paul O. Roberts). This paper was prepared to examine the state's implementation concerns of permitting LCVs on a national system. The impacts of such vehicle use were summarized, including increased productivity, pavement savings/costs, bridge costs, safety implications, traffic capacity and congestion, modal diversion, and environmental costs. State experiences where such vehicles are currently allowed were incorporated into the paper. Alternative means of allowing LCVs were examined, and guidance prepared to those states that are currently trying to respond to requests for such permitted use. The paper contains no specific recommendations, but instead, by presenting alternatives and discussing the pros and cons of each, governments currently facing decisions relating to LCV highway use have in one document suitable information that will inform these decisions. The paper provides a valuable source document for the AASHTO Joint Committee on Domestic Freight Policy.