The Track Geometry Interaction Map (TGIM) is proposed as an effective way to evaluate the
impact of multiple track geometry parameters on rail safety. Multi-body dynamics software has been
used to simulate vehicle performance over track containing a large number of randomly generated lateral
and vertical track geometry combinations. A TGIM based safety threshold is generated that appears to
offer both economic and safety advantages over the current FRA track safety standards.
Proceedings: International Heavy Haul Conference, Specialist Technical Session, Kiruna, Sweden, June 11-13, 2007: High Tech in Heavy Haul: 397–404.
Liu, Y, and E Magel. ‘Performance-Based Track Geometry and the Track Geometry Interaction Map’. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 223, no. 2 (1 December 2008): 111–19. https://doi.org/10.1243/09544097jrrt225.