Papers and presentations are solicited on all aspects of railroad civil, mechanical, electrical, and systems engineering, as well as rail safety, planning, design, financing, operations, and management. Papers on freight and passenger rail subjects are sought. Conference organizers encourage submissions on the following topics as well as other relevant railroad industry research topics. Track 1 Railroad Infrastructure Engineering Track 2 Rail Equipment Engineering Track 3 Signal & Train Control Engineering Track 4 Service Quality & Operations Research Track 5 Planning and Development Track 6 Safety and Security Track 7 Energy Efficiency and Sustainability Track 8 Urban Passenger Rail Transport Track 9 Electrification Track 10 Special Sessions