A series of fatal train accidents across the country in the last few months has prompted officials to launch a campaign reminding drivers to be more careful of passing trains. Since the start of February, nine people have been killed and nearly 20 injured in collisions involving trains, cars and trucks. The Hellenic Railways Organization (OSE) started handing out pamphlets at toll booths over the weekend reminding drivers about traffic rules at railway crossings and their obligation to give way. Meanwhile, chief prosecutor Dimitris Papangelopoulos ordered a preliminary investigation yesterday into claims made in a newspaper report that an electronic guiding system used by trains has been disconnected on purpose. A report in daily Hora on Friday said there have been 10 cases where the electronic system has been disabled.