B-trains have been found to exhibit superior dynamic performance compared to other heavy haul configurations, but are inherently inappropriate for transporting long commodities due to the mid-point articulation between two trailers. Recently, an innovation employing a sliding kingpin on the pup trailer has been developed that makes it possible to carry long logs. FERIC began a study of the long log B-train to facilitate regulatory approval in Alberta. This study was based on the B-train having gross vehicle weight of 62 500 kg and included a cornering performance analysis, a vehicle dynamics evaluation and a review of the maintenance and operational history. This report documents the finding of this study and compares a B-train used for long log transportation to other existing configurations.