Trucks weighing more than 3.5 tons will be subject to the Viapass toll in Belgium as of 1 April 2016. All trucks will have to be equipped with an onboard unit that has to be switched on when travelling on public roads. The OBU will only record the kilometres travelled on toll roads. For more information, including on vehicle categories that are exempt from the toll or to which the toll does not apply, please refer to the website www.viapass.be. The toll rates and maps showing the toll roads are available as downloads on the Viapass website.