1. Assistant Professor, Dept. of Civil Engineering, Road and Transportation Engineering, Wollega Univ., P.O. Box 395, Nekemte, Oromia Region, Ethiopia, East Africa (corresponding author). ORCID: .
2. Professor, Dept. of Civil Engineering, Anna Univ., Chennai, Tamil Nadu 600025, India.
3. Chief Scientist, Traffic Engineering and Safety Div., CSIR—Central Road Research Institute, New Delhi, Delhi 110025, India.
4. Senior Principal Scientist, Transportation Planning Div., CSIR—Central Road Research Institute, New Delhi, Delhi 110025, India.