To promote the development level of urban sustainability, more and cities have been paying attention to improvement public transportation. City managers intend attract people from private cars transport by improving service transport. The operational reliability bus lines plays a crucial role in maintaining high-level Previous studies focused on whole line investigating overall stability depart...

This paper introduces a new family of distributions defined in terms quantile function. The function introduced here is the sum functions life time called Burr III and Weibull. Different distributional characteristics reliability properties are included study. Method Least Square L-moments applied to estimate parameters model. Two real data sets used illustrate performance