Since February 2014 a project to reduce emissions from heavy duty vehicles has started with the support of CPK Automotive in Iran (Teheran). Working closely with the local authorities and universities the test vehicle was carefully identified. In Teheran the first test bus was equipped with diesel particulate filter and electronic control unit (incl. GSM/GPRS Module) from CPK. The bus is operating in Tehran (South-North direction). CPK Automotives ControlBox (ECU) collects data from the diesel particulate filter. Based on the collected data a decision will be made if diesel particulate filter will be equipped on busses nationwide. Additional test vehicles will follow soon.