Road signs in Indonesia the rules are not being implemented properly. Indonesian road signs use Indonesian, the official and the national language of Indonesia. However, English is also used for important public places such as tourist attractions and airports. Bilingual signs can be found in tourist areas such as Bali. Indonesia signed the Vienna Convention on Road Signs and Signals but have yet to ratify the Convention. Warning signs warn of possible dangers or unusual conditions ahead and alert motorists on the hazards to expect. Warning signs in Indonesia used to closely follow The American MUTCD and Japanese diamond-shaped with yellow background and black-and-yellow
Automotive industry in Indonesia taxis until the type was abolished in 1979. Mercedes-Benz officially entered Indonesian market in 1970, when PT Star Motors Indonesia (nowaday's PT Mercedes-Benz Distribution Indonesia/MBDI) established together with PT German Motor Manufacturing (nowaday's PT Mercedes-Benz Indonesia) in collaboration with Volkswagen in Tanjung Priok. They have since then become the dominant market leader in premium vehicles in Indonesia. They now locally assembled C Class, GLC Class, E Class, GLE Class, S Class, GLS Class, Axor trucks, and some Mercedes-Benz buses. Mitsubishi and their long-time local partner PT Krama Yudha Tiga Berlian Motors (KTB) has a long presence in Indonesia, but their