Exhaust gas recirculation (EGR) is a known method of reducing nitrogen oxides (NO X), but
the impact of its deactivation on emissions has not been quantified. This paper, therefore …

This paper presents the major outcomes of the utilization of smart phone applications in the
periodical technical inspection process. Road safety is one of the main topics in …

The paper shows a new method for detecting emission control system malfunction during
periodic technical inspection (PTI). The on-board diagnostic (OBD) test results were …