64 Int. J. Data Mining, Modelling and Management, Vol. 11, No. 1, 2019 Copyright © 2019 Inderscience Enterprises Ltd. Analysis of a performability model for the BRT system Renata Dantas* Informatics Centre, Federal University of Pernambuco, UFPE – Recife, Brazil and Federal Institute of Education, Science and Technology of Pernambuco (IFPE), Campus Recife, Brazil Email: rcspd@cin.ufpe.br *Corresponding author Jamilson Dantas Informatics Centre, Federal University of Pernambuco, UFPE – Recife, Brazil Email: jrd@cin.ufpe.br Gabriel Alves Department of Statistics and Informatics (DEINFO), Federal Rural University of Pernambuco (UFRPE), Recife-PE, Brazil Email: gabriel.alves@ufrpe.br Paulo Maciel Informatics Centre, Federal University of Pernambuco, UFPE – Recife, Brazil Email: prmm@cin.ufpe.br Abstract: Large cities have increasing mobility problems due to the large number of vehicles on the streets, which results in traffic jams and the eventual a waste of time and resources. An alternative to improve traffic is to prioritise the public transportation system. Several metropolises around the world are adopting bus rapid transit (BRT) systems since they present compelling results considering the cost-benefit perspective. The evaluating metrics such as performance, reliability, and performability aids in the planning, monitoring, and optimising of the BRT systems. This paper presents hierarchical models, using CTMC modelling techniques, to assess metrics such as performance and performability. The results show that these models pointed to the peak intervals that are more likely to arrive at the destination in a shorter time, in addition to