1. Regulatory Agency for Delegated Public Services of the State of Ceará, Fortaleza 60822-325, Brazil
2. Department of Industrial Engineering and Management, University of Porto, 4200-465 Porto, Portugal
3. INESC TEC-Institute for Systems and Computer Engineering, Technology and Science, 4200-465 Porto, Portugal
4. Federal Technology Center, Department of Transport Engineering, Campus do Pici, Federal University of Ceará, Fortaleza 60440-900, Brazil