Measurement of Speed of Vehicles in Assessing ERP Charges for Expressway

Mr Lim Biow Chuan asked the Minister for Transport how does LTA currently measure the speed of vehicles in assessing the ERP charges for an expressway.

Mr Khaw Boon Wan: The speeds of vehicles along expressways are measured using both data from sensors on GPS-enabled taxis and traffic monitoring cameras. ERP rates for expressways are reduced when vehicular speeds consistently exceed 65 km/hour, and increased when they consistently fall below 45 km/hour. This is reviewed every quarter.