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OCR for page 49
49 CHAPTER 5 Recommendations for Further Research 1. Extension of the research to other types of LFLRV, includ- 3. Development of a set of standardized wheel profiles and ing 100-percent low-floor and steering single-axle trucks matched rail profiles. These might have a fixed flange con- with IRWs. Linked to this is the issue of the validity of the tour with adjustments for flange height and the presence "2 g" crashworthiness approach, which may be inhibiting or absence of flange tip running. A recommended flange- the implementation of other types of LFLRV in the United to-tread transition should be specified, as well as the end States and Canada. of the tread contour. Wheel width would be variable, based 2. Detailed analysis of the operation of IRWs through on requirements. Compatibility of such a standardized different types of U.S. and Canadian designs of switches wheel profile would be studied in relation to the rail pro- and crossings, including single-point switches. files of existing systems and the performance requirements This would include the design of switches to accommo- of existing vehicles. date optimized wheel and rail profiles suitable for 4. Development of a "total" optimum solution for a "fresh IRWs. start" system.