The telolet sound, which represents a bus horn, actually appeared for the first time not in Indonesia, but in the Middle East. The sound is used to drive away the camels that frequent the streets.

Then, there was a businessman who heard this distinctive sound and brought it 'home' to Indonesia to use as a bus horn. "(The sound) of telolet actually comes from the Middle East to drive away camels. In Arabia if I'm not mistaken. Then as far as I know there used to be a businessman, hearing that sound installed on the bus. But at that time not many people used telolet.