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From 2016 to 2023, global sales of electric cars increased from 700,000 to around 13.9 million. That increase of nearly 20x is only one of the many indicators that, like many other industries, the transportation sector is prioritizing sustainability. Alongside the consumer market, the bus industry has likewise been making significant strides toward eco-friendly practices and technologies.

In this article, we’ll explore 4 of the biggest sustainability trends in the bus industry, focusing on advancements in diesel engines, the rise of electric buses, improvements in manufacturing processes, and responsible end-of-life management practices.

1. Improvements in Diesel Engine Technology

Diesel engines have long been favored in the transportation sector for their efficiency in converting fuel into energy, resulting in fewer emissions per unit of work. Diesel engines excel in heavy-duty applications, offering robust torque and durability, making them ideal for buses that need to carry substantial loads over long distances.

On top of their inherent advantages, modern diesel engines have undergone significant improvements to enhance their environmental performance. For example, while regen systems are great for reducing emissions, they’ve historically led to difficulties for bus maintenance crews. To combat this, technology like Cummins’ Stay Warm feature allows for the best of both worlds, providing fewer emissions with greater fleet efficiency.

Compared to diesel engines from 2006, newer models are also up to 90% cleaner, meeting stringent emissions standards set by environmental regulatory agencies. To stay ahead of the curve, manufacturers continue to invest in research and development to make diesel engines even more efficient and environmentally friendly.

Additionally, the use of biodiesel—a renewable fuel derived from organic materials—further reduces carbon emissions and promotes sustainability in the bus industry. Biodiesel blends seamlessly with traditional diesel fuel, offering a cleaner alternative without requiring significant modifications to existing engines or infrastructure.

2. Electric Buses: A Shift Towards Zero-Emission Transportation

The advent of electric buses represents a major shift towards zero-emission public transportation. Electric buses offer several advantages beyond emissions reduction, including reduced noise pollution, quieter operation, and lower operating costs over time. With advancements in battery technology and the expansion of charging infrastructure, the adoption of electric buses is steadily increasing worldwide.
Electric buses are particularly well-suited for urban environments where air quality concerns are high, contributing to cleaner and healthier cities. Governments and transit agencies incentivize the adoption of electric buses through grants, subsidies, and regulatory measures aimed at reducing emissions from public transportation fleets.

3. Improvements in Sustainable Manufacturing Practices

Sustainable manufacturing practices play a crucial role in reducing the environmental impact of bus production. Thomas Built Buses, for example, have achieved Zero-Waste-to-Landfill operations, ensuring that manufacturing processes minimize waste generation and maximize resource efficiency. This commitment to sustainability extends beyond the end product and encompasses the entire production lifecycle.

From utilizing recycled materials in bus construction to optimizing energy usage in manufacturing facilities, bus manufacturers are embracing eco-friendly practices without compromising product quality or safety standards. Sustainable manufacturing not only reduces environmental harm but also improves operational efficiency and enhances brand reputation among environmentally conscious consumers and businesses.

4. Responsible End-of-Life Management

Responsible end-of-life management is another key strategy for improving sustainability in transportation. One popular strategy is upcycling, where retired buses are repurposed for use in other vehicles or applications, extending their functional lifespan and reducing the need for new manufacturing. Components such as engines, transmissions, and body panels can often be refurbished and installed in other buses, reducing waste and saving resources.

Recycling also plays a crucial role in reducing the environmental footprint of bus disposal. Materials such as steel, aluminum, plastics, and glass can be recycled and used in various industries, further promoting sustainability and resource conservation.

Finally, dealerships that prioritize responsible recycling and disposal practices not only contribute to environmental conservation but also demonstrate their commitment to sustainable business operations, attracting environmentally conscious customers and stakeholders.

As the bus industry embraces sustainability-driven practices and technologies, it not only reduces its environmental footprint but also sets a precedent for other sectors to follow suit. By understanding and implementing these sustainable trends, bus dealers, operators, and manufacturers contribute significantly to a greener and more sustainable future for public transportation globally. Continued collaboration, innovation, and investment in sustainable solutions will play a pivotal role in shaping the next era of environmentally friendly transportation.