Karunasekera, B.S.A.Gunatilaka, A.H.Yahampath, A.P.Weerasiri, D.K.M.2018-04-192018-04-191991Transactions - 1991:p.92-95https://dl-iesl.nsf.gov.lk/handle/1/759Microprocessor controlled traffic light system with realtime vehicle countingTechnical Paper