Congestion as a Source of Variation in Passenger and Freight Railway Fuel Efficiency Fullerton, G.F., G.D. DiDomenico, M-C. Shih and C.T. Dick. 2014. Congestion as a Source of Variation in Passenger and Freight Railway Fuel Efficiency. In: Proceedings of the 2014 Joint Rail Conference. Colorado Springs, CO. Files Congestion as a Source of Variation in Passenger and Freight Railway Fuel Efficiency - Full Text (PDF) Categories Systems