Jayaratne, D.N.D.Vidanapathirana, C.J.Pasindu, H.R.2020-12-022020-12-022020-09Journal of the National Science Foundation of Sri Lanka, 48(3):p.227-237https://dl.nsf.gov.lk/handle/1/25110Challenges faced in heterogeneous traffi c data collection: a comparison of traffi c data collection technologiesArticle