Shree Sai Coach Builders Moves Beyond Compliance to Build the Next Generation of Buses

The Indian bus body manufacturing industry is entering a more demanding phase. Safety standards are becoming stricter, passengers expect better travel experiences, and operators are looking for buses that deliver reliability and value over their entire lifecycle.

For Shree Sai Coach Builders, this transition has become an opportunity to move further towards engineering-led manufacturing.

The Ahmedabad-based bus body builder, established in 1992, has achieved AIS 153 certification for its premium 2×1 sleeper coach range, covering 30-berth and 36-berth configurations, including variants with onboard washrooms. The certified bodies are available on Tata Motors, Ashok Leyland, BharatBenz and Eicher chassis platforms.

The certification covers critical areas including structural integrity, fire safety, emergency exits, passenger protection, rollover safety and NVH compliance.

“For us, AIS 153 is more than a regulatory requirement. It is a step towards building safer, more reliable sleeper coaches while giving operators greater confidence in the quality and compliance of the vehicles they purchase.”

Vishnubhai Oza, Director, Shree Sai Coach Builders

From a Coach Building Workshop to a Modern Manufacturer

Shree Sai Coach Builders has spent more than three decades developing its presence across India’s passenger mobility market.

What began as a modest coach-building workshop has evolved into a modern manufacturing operation serving private and tour operators, corporate mobility providers and institutional customers.

Its portfolio now spans premium sleeper coaches, luxury seater buses, staff transportation, school buses and customised transport solutions.

Technology has been central to that transformation. The company has moved from largely manual design and fabrication processes to CAD-based design, advanced fabrication equipment, precision welding and modern paint and finishing systems.

This has allowed Shree Sai to improve manufacturing consistency while taking on larger and more complex projects.

Engineering the Premium Sleeper

The company’s latest product development reflects the changing expectations of India’s bus passengers.

Its premium sleeper coaches combine modern exteriors with structural strength and passenger-focused interiors. Ambient lighting, ergonomic layouts, improved insulation, integrated charging points and efficient HVAC systems are among the features being incorporated into its coaches.

Lightweight materials, advanced fabrication techniques and improved NVH control are also being used to create quieter and more refined cabins.

The modular approach allows operators to customise layouts and features according to their operating requirements.

Compliance Is Changing the Industry

AIS 153 has also changed what bus body builders need to consider during product development.

For Shree Sai, achieving certification required design optimisation, material selection, structural validation and the integration of additional safety systems. It also involved investment in testing, engineering development and manufacturing processes, alongside coordination between engineering, production and quality teams.

The company believes the regulation establishes a common safety and quality framework without preventing manufacturers from differentiating themselves through design, interiors, passenger amenities and engineering.

Preparing for What Comes Next

The market is moving towards premium sleeper and intercity travel, while electrification is creating new requirements around weight optimisation, structural efficiency and vehicle design.

Shree Sai is responding by strengthening its engineering capabilities, expanding its product portfolio and adopting modern manufacturing technologies.

“At Sai Coach, our focus is on strengthening our engineering capabilities, expanding our product portfolio and adopting modern manufacturing technologies that enhance quality, efficiency and safety.”

Jigar Oza, Managing Director, Shree Sai Coach Builders

The company’s next phase will continue to focus on premium sleeper travel, electrification and next-generation passenger comfort.

For Shree Sai Coach Builders, AIS 153 is therefore not the destination. It is another step in a three-decade journey from traditional coach building towards a more engineering-driven and technology-enabled future.