Agam Tungga Jaya

Ki Agus Muhammad Syidik ​​was born in Maospati, Magetan Regency, East Java on May 5, 1991.^[2] Since childhood, he was known as a diligent figure and had a great interest in the bus mode of transportation. His love for this mode arose from the habit of traveling by intercity bus, which made him admire the hard work of bus driver. In fact, he aspired to become a bus driver, despite his parents' opposition. But his passion for the world of transportation never faded. This love would later become the foundation for the emergence of several large bus companies under his leadership.^[3][4]

Instead of becoming a bus driver, Syidik ​​received Rp 2.5 billion in capital from his parents to expand the fuel distribution business they had started, under the name Agam Tungga Jaya (ATJ). This capital would later be used to establish a bus company. ^[4]

After graduating from school, Syidik ​​started a small-scale business at ATJ. This is where he learned financial management and logistics, which later became a strong foundation for managing a transportation fleet. Around 2012–2013, the oil distribution business began to grow rapidly and became a source of initial capital for entering the world of land passenger transportation. He then decided to shift his focus from oil distribution to tourism transportation services, with the vision of building a business that stemmed from his own hobby.^[5]

2014 was a significant turning point in his life. It was in this year that Syidik, using the ATJ brand, launched a tour bus service. Starting with just a few microbus units, ATJ served tours to various cities in East Java and Central Java. As his business grew, he finally purchased a used large bus from Subur Jaya, a tourist bus company from Rembang Regency, Central Java.^[5]

According to Syidik, regarding the company's name, "Tungga" is the name of his youngest brother, while "Jaya" represents the hope for success.^[6]

As his business grew, Syidik ​​began to think about expanding into the intercity bus interprovincial sector. On June 14, 2017, he established Sudiro Tungga Jaya (STJ) as a new subsidiary. STJ was born from the same spirit as ATJ, but serves regular routes such as Madiun–DKI Jakarta and other cities in Java Island].^[5] In a short time, STJ developed into one of the most popular bus companies in Indonesia in the late 2010s, known for its elegant buses and excellent service.^[4] The name "Sudiro" refers to the nickname of Syidik's father.^[6]

Élkusla (éling, kuwat, slamet) is both STJ's jargon and corporate philosophy, and its text has been affixed to the bus bodies and windows. This jargon was adopted by Syidik, a member of silat school, as the company's value. Speaking to Kurnia Lesani Adnan's PerpalZ TV, Syidik ​​said that "élkusla" is a reminder for himself and all STJ employees (and the ATJ Group): "We are always "éling," reminded of God Almighty, "strong" in facing all trials, and "safe" in this world and the hereafter."^[1][6]

After a year of operation, STJ has begun acquiring new units.^[7][8] Through the cool hands of Syidik, ATJ Group has grown rapidly due to its neat and systematic service and unique and daringly different bus design concept,^[3] thus attracting the attention of bus lovers and also players and modders of truck/bus simulators Euro Truck Simulator 1 and 2, UK Truck Simulator, to Bussid.^[9]

By the early 2020s, STJ had a fleet of 135 buses with various service classes.^[4] Its popularity among bus enthusiasts has also increased due to its very attractive appearance.^[10] However, STJ's journey has not always been smooth — several times the company has been in the media spotlight, both because of the driving style of some bus driver who are considered reckless,^[11] and Syidik's involvement in the case of hoarding subsidized fuel.^[12] Syidik ​​responded to these issues openly and expressed his commitment to improve, tighten driver management, and maintain the company's professional image.^[11]

The success of his two previous companies encouraged Syidik ​​to diversify his business further. In early 2025, using his second subsidiary, PT Tunas Muda Transportation (TMT), which he had established during the development of STJ, Syidik ​​launched a third bus brand with the same name. This brand focuses on long-distance intercity and interprovincial bus services and the provision of intercity and tourism buses for existing brands (ATJ and STJ). TMT has become a symbol of regeneration and innovation under the ATJ Group. With professional management and modern facilities, TMT has expanded its transportation business reach from its Java-based base to a national scale. The presence of TMT is also a strategic step for Syidik ​​in creating new jobs in the land transportation sector.^[13]

TMT's debut route is Magetan–Jakarta, using a sleeper bus.^[14] The bus uses a bodywork produced by New Armada.^[13]

By the early 2020s, STJ had a fleet of 135 buses with various service classes.^[4]

ATJ, STJ, and TMT use a combination of various chassis and body brands for their bus fleets. At the beginning of ATJ and STJ's debut, they themselves still used Hino chassis (RK8 R260 and Hino RN 285), even since they were still using a fleet purchased second-hand from Subur Jaya.^[5] However, after this bus business grew, ATJ and STJ have used various brands and models of chassis, including Scania (K410iB,^[5] K360iB^[5]), Volvo B11R,^[15] and Mercedes-Benz (OC 500 RF 2542,^[15] OH 1626^[5]).

Meanwhile, the bodywork initially used was only Adi Putro, namely Jetbus2+. However, in its development, ATJ and STJ have purchased newer bus bodies from Adi Putro, such as Jetbus3+ UHD (Ultra-High-Deck)^[16] and Jetbus5 MHD (Medium-High-Deck) Single-Glass.^[17] Apart from Adi Putro, ATJ and STJ also purchased buses from Laksana (Legacy SR-2 XHD Prime^[15] and SR-3 Neo XHD Panorama^[18]), Tentrem (Avante H9),^[19] and New Armada (Evolander).^[20]

For Tunas Muda Transportation (TMT)'s sleeper class, the debut route uses a Mercedes-Benz 1626 chassis with a Skylander R22 FL Vision 8 Sleeper body made by New Armada.^[13]

Sudiro Tungga Jaya (STJ) serves the East Java route via the Trans-Java Toll Road, namely:

• Ngawi–Maospati–Surabaya^[21]
• Magetan–Maospati–Surabaya^[22]

As of 2021, ahead of the mass closure of its intercity and city (AKAP) routes, the remaining intercity and city (AKAP) routes of Sudiro Tungga Jaya that are still operating include:^[22]

• Surabaya–Solo–Yogyakarta–Magelang
• Surabaya–Solo–Yogyakarta–Purbalingga
• Surabaya–Solo–Yogyakarta–Bandung
• Surabaya–Solo–Cirebon–Kuningan

With the launch of the Tunas Muda Transportation (TMT) route Madiun–DKI Jakarta in March 2025, the STJ fleet operated for intercity and interprovincial travel will be gradually transferred to TMT.

Agam Tungga Jaya (ATJ), since its inception by Syidik, has focused on tour bus services and serves Java, Madura, Bali, Sumatra, and Nusa Tenggara. ATJ buses are generally rented for various tourism purposes, including religious tourism and pilgrimages, office events, and field trips.^[23]

On 6 May 2020, 31 travelers from Jakarta were dropped off by the STJ bus crew on the side of the road. Solo–Ngawi Toll Road, precisely at Ngale, Paron, East Java. They were dropped off on the road because the bus avoided being blocked by officers at the toll gate. The homecoming travelers were secured by residents after being caught jumping over the toll fence.^[24] However, the company admitted that this was a passenger request.^[25]

On Monday, 4 September 2023, Syidik ​​was arrested by the police after allegedly hoarding and shunting subsidized diesel fuel purchased from a Gas Station. The subsidized diesel fuel is suspected of being resold to factories.^[26][27]