2010-07-062010-07-061991https://dl.nsf.gov.lk/handle/1/5363Traffic LoadPrice MechanismRoad MaintenanceTraffic Control MeasuresEnergy WastageParking FacilitiesTraffic RulesSri LankaTransportEnergyEnergy efficiency in transport:proceedings of a seminar organised by the Working committee on energy, NARESA, 15 Feb.1991