1. Regional Transport Research and Education Centre, Kumasi (TRECK), Department of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
2. Department of Statistics and Actuarial Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
3. Council for Scientific and Industrial Research (CSIR)- Building and Road Research Institute, Kumasi, Ghana