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.

The speeds of vehicles along expressways are measured using both data from sensors on Global Positioning System (GPS)-enabled taxis and traffic monitoring cameras. Electronic Road Pricing (ERP) rates for expressways are reduced when vehicular speeds consistently exceed 65 kilometres per hour (km/hr), and increased when they consistently fall below 45 km/hr. This is reviewed every quarter.