Don't sound the horn so loud," says the voice from the communications radio in the locomotive of the Kamandanu executive class train that serves the Semarang-Jakarta line. The three men in the locomotive's cab, including engineer Djoko Sukiswan who had just finished sounding an extra long blast on the horn, burst out laughing at the shouting from the radio. They knew that the Railway Traffic Controller for Lawang Station in Semarang, whose