This approximation is adequate whenever the expected frequency of any classification is at least five. The Weibull probability distribution representation for these two components is next developed and tested. Establishing the Weibull Distribution Parameters One can utilize statistical regression to establish estimates of Weibull distribution parameters that best describe the failure data of interest. The approach used to start with the cumulative failure rate function for the Weibull distribution and then estimate least squares values for the Weibull parameters. These results verify that the Weibull distribution provides a good representation of time to failure for the AC Gate and Ticket Transport system.
Plazas have multiple lanes.
If one lane is non-operational, traffic uses other operational lanes. Thus, lanes are considered to operate in parallel. Most plazas serve traffic flowing in two directions. Only the lanes with the same orientation are considered to operate in parallel. A given lane is neither in parallel or series with lanes serving other directional orientations.