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Appendix E - Track Maintenance Standards
Pages 69-71

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From page 69...
... In general, it is the German philosophy not to work to the maximum wear limit but to have shorter maintenance intervals to ensure problem-free operations and high running comfort and also to save cost. The light rail operator in Karlsruhe generally uses the strategy of "advanced maintenance," which is linked to the available budget.
From page 70...
... In contrast, in the United States, there are more on foot inspections of the track than in Karlsruhe. Apart from these specified inspections, a further important diagnostic is the use of the normal service vehicles travelling at maximum speed, in order to be able to estimate certain track bed errors (e.g., warping of the track)
From page 71...
... The allowed defective crossties per section may be critical. This results in worse track condition and/or increased maintenance cost.


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