Researchers investigated reinforcement learning (RL) for adaptive traffic signal control at an urban intersection in Kuwait, aiming to mitigate urban traffic congestion. They developed a Proximal Policy Optimization (PPO)-based controller that dynamically adjusts green-phase durations using local traffic states in a realistic simulation environment informed by real-world Kuwaiti traffic data. The controller reduced average vehicle delay by 46% relative to fixed-time control and 34% relative to actuated control, while also lowering per-vehicle CO2 emissions by approximately 23%. Why it matters: This demonstrates a practical, learning-based edge traffic signal control solution for IoT-enabled smart city transportation systems, offering significant improvements in traffic flow and environmental impact for car-dependent cities in the Middle East.
The Oil Sustainability Program (OSP), in partnership with PIF, SIRC, NEOM, SIKA, and ClimateCrete, has launched the "NovusCrete" Consortium to innovate in sustainable concrete solutions. The initiative prioritizes localization using materials like seawater, recycled construction waste, and fine sand, supported by entities like the American Concrete Institute (ACI). ClimateCrete, a KAUST spin-off, uses patented technology to transform fine sand into high-quality concrete sand, reducing cement use and CO2 emissions by up to 60%. Why it matters: The consortium and ClimateCrete's technology represent significant steps towards sustainable construction practices in the region, aligning with Saudi Arabia's carbon neutrality goals and fostering a deep-tech startup ecosystem.
ClimateCrete, a KAUST spinout, has raised investment for its technology that modifies sand particles to make them suitable for concrete manufacturing. The patented tech reduces the need for cement and lowers CO2 emissions by up to 60 percent. Tests show a significant increase in strength compared to untreated sand. Why it matters: This technology addresses the global shortage of suitable construction sand and supports Saudi Arabia's carbon-neutrality goals by enabling a 100% domestic supply chain for concrete.
Researchers at KAUST have synthesized a novel porous organic polymer (POP) with enhanced CO2 adsorption properties. The POP material has aldehydes that allow for post-synthetic functionalization by amines, improving interactions between CO2 and the material. Experiments showed a significant enhancement of CO2 affinity and a drastic increase in heats of adsorption. Why it matters: This research provides a promising new material for economic and efficient carbon capture, addressing the urgent need to reduce CO2 emissions.
KAUST Professor J. Carlos Santamarina is researching solutions to the global energy challenge, focusing on sustainable energy production while reducing CO2 emissions. He notes the increasing energy demand due to population growth and the limitations of current energy sources. Santamarina emphasizes the need for fuel-producing countries to participate in carbon capture and storage to meet carbon targets. Why it matters: This research contributes to addressing critical sustainability challenges in the region, especially in oil-producing countries like Saudi Arabia.
KAUST researchers are addressing the challenge of growing electricity consumption in cooling technologies, as the global demand for air conditioning increases by 3-4% annually. In Saudi Arabia, cooling systems account for up to 70% of electricity usage during the summer. Researchers at KAUST's Water Desalination and Reuse Center are exploring ways to improve the energy efficiency of chillers to reduce costs and CO2 emissions. Why it matters: Improving cooling efficiency is critical for reducing energy consumption and carbon emissions, especially in hot climates like Saudi Arabia and other GCC countries.
A KAUST-led multidisciplinary research team is studying the feasibility of storing CO2 in subsurface rock structures in Saudi Arabia, specifically in Harrat near Madinah. The project, conducted under the auspices of the Saudi Ministry of Economy and Planning, involves researchers from KAUST, King Abdulaziz University, and MEP. The team is investigating carbon capture and storage as a means to address climate change and meet Saudi Vision 2030 goals. Why it matters: This research could provide a pathway for Saudi Arabia to reduce CO2 emissions and contribute to global climate change mitigation efforts, aligning with the Kingdom's commitment to the Paris Climate Agreement.
Siemens CTO Rainer Speh spoke at KAUST about smart cities, noting that urban populations are growing, especially in cities like Riyadh and Jeddah. Cities consume two-thirds of the world's energy and generate 70% of CO2 emissions. Siemens is working on a driverless subway system in Riyadh as part of its smart city initiatives. Why it matters: Smart city initiatives are crucial for managing resources and reducing emissions in rapidly growing urban centers in Saudi Arabia.