3D Rail Infrastructure Design and Maintenance Software Bentley Rail Track is a comprehensive 3D rail design software application for preliminary and detailed 3D design of rail infrastructure. Comprising of regression analysis, horizontal, vertical alignment and cant design, turnout placement to international standards, and rail corridor modelling, the software offers high degrees of automation to established industry workflows, delivering significant productivity improvements and time savings for design and maintenance of all types of rail projects including metro and light rail, commuter, and high speed rail.