Effect of Track Geometry and Rail Vehicle Suspension on Passenger Comfort in Curves and Transitions

[+] Author and Article Information
G. R. Doyle

Battelle’s Columbus Laboratories, Columbus, Ohio

M. A. Thomet

Bechtel, Inc., San Francisco, Calif.

J. Eng. Ind 99(4), 841-848 (Nov 01, 1977) (8 pages) doi:10.1115/1.3439360 History: Received January 04, 1977; Online July 15, 2010


Passenger comfort is an important constraint on high-speed operation in curves and transitions. The effect of track geometry and vehicle suspension characteristics on passenger comfort were investigated with a six-degree-of-freedom, time domain simulation of the car body dynamics. The rail vehicle was simulated at constant speed on transitions and curves to generate acceleration profiles at a passenger’s seat location. The main conclusion of this study is that modern rolling stock can negotiate curves at a higher unbalanced superelevation than is recommended in the current AREA formula without exceeding passenger comfort standards. Also, the minimum spiral lengths as determined by the AREA formula are adequate for passenger cars with stiff roll characteristics, such as the Metroliner vehicles.

Copyright © 1977 by ASME
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