Long before the distinctive luxury fleets of Sudiro Tungga Jaya dominated the Trans-Java highway, the foundation of the company was built on simple hard work and family values. The story began in Maospati, Magetan, East Java, through the entrepreneurial vision of Ki Agus Sidik. He established Agam Tungga Jaya (ATJ), a modest tourism bus service that relied heavily on dedication, meticulous maintenance, and a core commitment to local passenger safety.
The true turning point and modern evolution of the company arrived when leadership transitioned to his son, Satria Galih Wisnumurti. Armed with a bold vision and a deep understanding of the evolving landscape of Indonesian public transportation, Galih recognized that modern passengers were no longer just looking for a ride—they were demanding world-class luxury, speed, and executive-level hospitality.
In 2017, under Galih’s visionary guidance, the company made a massive strategic leap by officially launching the regular Intercity-Interprovincial (AKAP) division under the flagship name: Sudiro Tungga Jaya (STJ).
Ki Agus transitions from the family oil distribution business to launch a tourism bus company, starting with just 2 units.
STJ launches as an AKAP intercity operator. The inaugural routes on June 14, 2017 were Ponorogo–Bogor and Ponorogo–Ciledug.
Coverage grows beyond Madiun Raya to include Wonogiri, Muria, Yogyakarta, Pekalongan, Madura, and Wonosobo.
Within just 3 years of AKAP operations, STJ achieves an extensive route network and a fleet of over 100 units — a remarkable milestone.
STJ sends 20 Mercedes Benz OH 1526 chassis to Karoseri Laksana, making headlines in Indonesia’s bus industry.
The group expands further with the launch of PO Tunas Muda, a new premium bus brand also based in Maospati, Magetan.
Our guiding principles drive us forward. Discover the core commitments and long-term aspirations that shape the future of Sudiro Tungga Jaya.
To become the leading premier intercity transport provider in Indonesia, recognized globally for setting the gold standard in passenger safety, high-end travel luxury, and exceptional service reliability.
To prioritize the well-being of our passengers by deploying rigorously certified driving crews, adhering to strict maintenance protocols, and utilizing advanced real-time fleet monitoring systems.
To continuously innovate and invest in modern, premium European chassis and state-of-the-art coachbuilder cabins equipped with elite amenities to elevate the passenger journey.
To respect and value our passengers’ time by optimizing transit routes, streamlining operations, and delivering consistent on-time departure and arrival schedules.
To foster a culture of service excellence among our ground staff and onboard crew, ensuring every traveler experiences warm, professional, and reliable Indonesian hospitality.
Operating under the structural synergy of ATJ Group, our specialized business divisions work in harmony to deliver integrated ground transportation solutions across Indonesia.
The foundational pioneer of the group, specializing in non-route premium tourism and charter bus services. ATJ delivers flexible, custom-tailored travel itineraries across Java and Bali, backed by an elite fleet of modern coaches.
Our flagship intercity-interprovincial (AKAP) express division. Renowned for its rapid Trans-Java highway routes, strict punctuality, and premium executive class service connecting major economic hubs and cities.
The group’s strategic division engineered for the ultra-luxury market. Managing dedicated point-to-point routes, TMT operates cutting-edge sleeper bus models equipped with elite, single-cabin passenger amenities.