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Not content with Dubai having the tallest building, the deepest pool or the highest hotel, urban design firm URB hopes to add one more superlative feather to the city’s cap: the world’s “greenest” highway.

URB has released conceptual designs for a 64-kilometer-long highway that would see Sheikh Mohammed Bin Zayed Road, one of the city’s main traffic belts, transformed into a “Green Spine,” complete with autonomous, solar-powered trams and smart traffic management.

Baharash Bagherian, urban planner and founder of URB, believes the “first-of-its-kind project” would make the city’s design more “human-centric.”

“Dubai is rapidly expanding, with its population expected to nearly double to 8 million by 2040,” Bagherian told CNN in an email. “This growth necessitates creativity and innovation to address both current and future challenges.”

“We must view mobility as more than just the movement of people,” he added.

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Urban design firm URB has released renders of its conceptual "green spine" which would transform a 64-kilometer highway in Dubai into a solar-powered tram line with lush green overpasses, pictured in this render. Look through the gallery to see more of the futuristic proposal.
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If built, the Green Spine would integrate a variety of smart technology, including "internet of things" (IoT) sensors that could manage energy consumption and smart traffic control, and autonomous solar-powered trams, pictured in this render.
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A cycle track alongside the tram line would further expand Dubai's low-impact transport options. "The most significant opportunities to make cities more livable and human-centric start with reimagining mobility," says Baharash Bagherian, founder of URB. "By seamlessly integrating accessible green spaces, efficient mass transit, and active transport with all essential amenities, we can address multiple challenges simultaneously."
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In addition to public transport, the green highway could include community facilities that would help transform Dubai into a "20-minute city," reducing the need for residents to travel far from home to access essential amenities, such as groceries, pictured in this render.
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Above the tram and cycle track, a network of footpaths would enable easier connectivity to mass transit systems, and green spaces — such as gardens and parks, pictured in this render — would be planted with one million trees that could provide natural cooling and cleaner air for the city.
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“Dubai is rapidly expanding, with its population expected to nearly double to 8 million by 2040,” says Bagherian, adding that mobility is "more than just the movement of people.” While the Green Spine is currently conceptual, Bagherian hopes it will turn "from vision to reality" as part of Dubai's 2040 urban masterplan.
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This isn't URB's first design for a greener Dubai. Its other futuristic concepts include Dubai Mangroves (pictured in this render) — a project that aims to plant 100 million mangroves along a 70-kilometer (43-mile) stretch of Dubai's shoreline.
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And URB's smart cycling infrastructure, called "The Loop" (pictured in this render) is another concept that could make commuting in the city greener. The 93-kilometer indoor cycling super highway is designed to wrap around the city, and would be filled with trees and plants.

Smart tech and solar-power

The autonomous solar-powered tram is just one aspect of the proposed highway’s transport system: above the tram line, a network of green areas, parks and overpasses would increase connectivity and walkability of the city, which is currently tough to navigate on foot.

The highway would also integrate smart technology, such as “internet of things” (IoT) sensors, to manage traffic and optimize energy use.

Bagherian’s designs allow for 300-megawatt solar panels and a storage system to be embedded in the tracks, that would power the tram line, as well as generate clean energy for an estimated 130,000 homes.

And the green spaces — including parks and community gardens — would provide space for one million trees, which would also help cool the city and improve air quality.

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The green highway, pictured in this render, would also include a network of footpaths and green community spaces.

‘A unique set of challenges’

Creating the world’s “greenest” highway in a desert city isn’t easy, though.

The United Arab Emirates (UAE) already has one of the world’s highest water consumption rates per capita, consuming around 550 liters per person, per day (compared to an average of 310 liters in the US, 150 liters in Hong Kong, and 144 liters in the European Union).

Most of this isn’t used as drinking water, but in agriculture and landscaping, and the country’s green spaces use copious amounts of water. For example, Dubai Miracle Garden — a 72,000-square-meter park displaying 150 million live flowers — consumes 757,000 liters (200,000 US gallons) of water every day.

“Dubai presents a unique set of challenges: its rapid growth, diverse population, urban sprawl, and extreme climate conditions,” Bagherian said.

To combat this, Bagherian’s concept includes “water-sensitive landscape design” that includes native flora and drought-resistant plants suited to the arid climate, and soil mixed with zeolite, an absorbent crystal that aids water retention.

These “passive techniques” are complemented with smart irrigation technology, he added, “which use real-time data to adjust watering schedules based on soil moisture levels, weather forecasts, and plant needs.”

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Developer URB has designed a 93-kilometer (58-mile) indoor cycling super highway, shown here in a rendering, that would wrap around the city of Dubai.
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If built, the project, known as "The Loop," would provide a car-free, climate-controlled "green corridor" filled for residents to walk, cycle, or run around the city.
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As well as paths for cyclists and runners, it would provide areas to relax, play, and exercise.
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The enclosed design would offer green spaces with shade and shelter from the extreme heat of Dubai's summer months.
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Separate from The Loop is another environmentally conscious design proposed by URB, known as the "Agri Hub." Pictured in this rendering, the project would be a center for sustainable agriculture and tourism in the desert outside of the city of Dubai.
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Agri Hub and The Loop would both make use of recycled gray water for irrigation of lush, green public spaces.
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URB's CEO Baharash Bagherian wants the Agri Hub to help visitors understand sustainable agriculture techniques such as vertical farming -- growing plants without soil or natural light in vertically stacked beds. This technique uses much less water than conventional methods.
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The Agri Hub design includes elements from a working farm, as well as features for tourists. Over roughly 40 hectares, the Agri Hub would host spaces for education and research, as well as eco-lodges, farm shops, and farm-to-table restaurants and cafes.
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Bagherian has previously led the designs for Phase 2 of "The Sustainable City" in Dubai and worked on similar green communities currently under construction in Yiti, Oman, and Yas Island in Abu Dhabi. Pictured in this rendering, designs for the Nexgen Sustainable City, which URB has designed for Cairo.
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"The whole world is moving towards a greener economy," says Bagherian. "The strongest economies are going to be the ones who are able to transition towards sustainability at the earliest possible opportunity." Pictured in this rendering, designs for the Nexgen Sustainable City.

An urban utopia

This isn’t URB’s first foray into utopian future city design. Its proposal for “Dubai Mangroves” — which it claims will be “world’s largest coastal regeneration project” if it goes ahead — was revealed earlier this year, and last year, it also proposed a 93-kilometer indoor cycling “superhighway” called The Loop that could help residents in the emirate go car-free.

Like the Green Spine, none of these designs have been confirmed. But Bagherian says that turning these conceptual designs into a reality isn’t as tough as it looks.

“When you break down the components of the project, you’ll find that there’s nothing new from a technological, structural, or material standpoint,” he said, adding that the innovation lies in how these technologies are “creatively and seamlessly integrated to address multiple needs.”

The next step involves getting public sector entities onboard, to provide “the necessary support, regulatory framework, and infrastructure integration to bring this ambitious project to life,” Bagherian said.

He’s optimistic that this will happen, as the project aligns with the government’s 2040 Urban Master Plan, and creative urban planning is key to fulfilling those goals.

“Dubai is uniquely positioned to make this project a reality,” he added.