Autonomous vehicles have been confirmed to reduce greenhouse gas emissions

Self-driving vehicles have the potential to cut ride costs by 40-50% and eliminate thousands of road deaths

Author Andrew Miller argues that widespread adoption of self-driving vehicles is no longer a distant promise, as Waymo expands into over 15 cities. However, he warns the technology's biggest remaining hurdles are political: liability, labor, and whether cities embrace or resist the shift.

Explore the components of autonomous vehicles controls

A suite of cutting-edge hardware and computation-intensive software creates the potential for self-driving cars to be safer, more fuel-efficient, and more accessible to a broader range of drivers. However, automation also introduces potential cybersecurity threats.

Connected technology improves infrastructure efficiency in smart cities

Through information and communication technologies, smart cities can provide enhanced public services and improved quality of life by managing traffic and dynamic safety policies. They can also promote sustainability by automating energy use and redirecting resources according to need.

Self-driving cars may upend transit before cities can build it

Austin approved a $7.1B light-rail in 2020, but components of the plan have already been cut. Simultaneously, Waymo launched a 200-car autonomous fleet across the city. Cities now face a choice: invest in decadeslong fixed infrastructure projects or embrace flexible, on-demand autonomous vehicles that can navigate anywhere.

Future self-driving cars may communicate across a closed wireless infrastructure

Current autonomous vehicles collect and analyze their own data through their own hardware and proprietary software. Connecting data from all such cars on a single network will require overcoming challenges related to standardization and security.

Artificial intelligence may further enhance smart city data analysis

Identifying patterns within systems in the Internet of Things may enable AI tools to make informed decisions regarding transportation, safety, and sustainability without human intervention. However, such tools will also need to successfully address concerns about privacy, digital equity, and algorithmic bias.

Today's cars use turbocharged hybrid engines and AI-assisted technologies

In addition to enhanced speed, serious accidents and technological advances have led to major innovations, leading to more aerodynamic and more protective cars.

Smart city systems can increase positive feelings toward local government

A 2018 study analyzed 50 global cities to determine whether smart city technologies enhance residents' quality of life. It found that these technologies can decrease the time spent interacting with healthcare and government by 45% to 65%, while also decreasing the disease burden by 8% to 15%.

As of 2025, self-driving cars continue to be unavailable to consumers

These vehicles rely on radar, cameras, lidar, and advanced AI to process data and make real-time driving decisions. Companies like Waymo and Mercedes-Benz are testing autonomous cars on public roads, but challenges remain, including technical reliability issues, regulatory hurdles, and a lack of consumer trust.

In 2023, self-driving cars drove 3.3 million miles on California's roads

According to the state's DMV, the mileage represented a fivefold increase from the previous year. General Motors' Cruise and Alphabet's Waymo accounted for the bulk of miles, though 38 companies have received permits to test autonomous vehicles in the state.

There's some evidence that working from home has helped the environment

Those who work fully remote can have a 54% lower carbon footprint than on-site laborers, according to one 2023 study. For instance, the share of Americans driving to work alone decreased by about 7% between 2019 and 2022, significantly reducing vehicular emissions.

Dubai and Barcelona are examples of smart cities

By integrating technology into public transit, utilities, and other municipal systems, these cities aim to reduce costs and enhance the quality of life for their residents. Some of these technologies include adaptive lighting, parking sensors, and underground waste systems.

Explore the National Highway Traffic Safety Administration's guide to automated cars

This page provides answers to questions on topics ranging from liability for crashes involving autonomous cars to the safety benefits of these cars. A timeline of the evolution of automated safety technologies is also provided.

There is no clear national standard of laws for autonomous vehicle

Some US states allow self-driving vehicles to operate without a human driver present, while others require a licensed driver to be behind the wheel. As of January 2023, a total of 21 states have legalized autonomous vehicles in public, with six focused solely on semi-trucks.

Explore plans for smart cities expected to be built by 2050

Locations such as Net City in China, Woven City in Japan, and NEOM in Saudi Arabia are expected to incorporate green energy, AI, and advanced transportation system technologies to enhance air quality, reduce congestion, and minimize pollution by significantly reducing personal car use.

The Society of Automotive Engineers sorts self-driving technology into six levels

At level 0, a vehicle cannot intervene on its own, and the driver controls all navigation. At level 3, the car operates autonomously under limited conditions, but a human can still take control. A future level 5 vehicle drives itself and lacks a steering wheel or pedals.

In a 2024 survey, 93% of participants expressed concerns about self-driving cars

Safety was the leading consumer fear, with technological malfunctions coming in second. Nearly half of all consumers identified skepticism or concern as their primary descriptor for autonomous cars, but 20% cited enhanced mobility for the elderly and people with disabilities as a key benefit.

AI may enable smart cities to drastically improve public safety

By utilizing machine learning techniques to analyze real-time monitoring reports against facial recognition databases, artificial intelligence can enhance the identification of criminals and coordinate an appropriate emergency response across various scenarios.

As of 2024, 13 states have plans to phase out gas-powered cars

In 2022, California adopted the Advanced Clean Cars II Act, which requires all new passenger cars, trucks, and SUVs sold to produce zero emissions by 2035. Other states adopted similar laws, joining more than 50 countries with phaseout plans.

Self-driving car companies like Waymo use LiDAR technology for navigation, which constructs 3D maps of a car's surroundings by emitting light pulses in all directions.

Self-driving formula cars race in the Abu Dhabi Autonomous Racing League

The league and high-speed versions of traditional cars help to showcase the capabilities of driverless vehicles and the reliability of their AI systems. Leonardo da Vinci first imagined the idea for such machines in the 16th century.

Battery and plug-in hybrid EVs can operate with zero tailpipe emissions

Battery electric vehicles only run on electricity, while plug-in hybrids incorporate a small internal combustion engine that recharges the battery or directly powers the wheels to improve driving range. Fuel cell electric vehicles convert hydrogen gas fuel into electricity.

As of 2025, Waymo has rolled out "robotaxi" services in five US cities

The company has been under investigation by the National Highway Traffic Safety Administration following dozens of crashes and incidents that appear to show Waymo vehicles violating traffic laws over the past decade in Phoenix, San Francisco, Los Angeles, Atlanta, and Austin.

Smart cities support interdepartmental goals by facilitating shared infrastructure

Instead of working in isolation, municipal departments can share data, such as lighting and telecom needs, seamlessly and collaborate to solve larger-scale problems together. Integrating public feedback systems can further improve city services and sustainability.

Tesla offers two variations of autopilot systems for its vehicles

The standard package provides adaptive cruise control, which adjusts the vehicle's speed according to traffic conditions, and autonomous steering to maintain the car's path. The enhanced system includes automated lane changing, parking, traffic light, and stop sign controls.

Nearly every major automaker now offers a hands-free driving system

The capabilities of these systems range from automatic lane changes via eye-tracking to an assistant that reminds you to check your blind spot before changing lanes yourself. Most systems still require the driver to remain alert and be prepared to take over.

Read a book making the case for 'smart enough' cities

University of Michigan professor Ben Green argues that cities should be enhanced by technology rather than driven by it, thereby preventing injustice and inequality beneath their surface. By embracing social change in conjunction with smart technologies, residents, Green suggests, can avoid valuing such technologies as ends in themselves.

The aviation industry built trust in automation by keeping pilots in the cockpit

Nearly 70% of Americans feel uncomfortable riding in a driverless car, and 81% of them would not fly on a pilotless plane. However, automated systems on planes were slowly introduced and advertised as enhancing safety—an approach that may benefit driverless vehicles.

Smart cities have been more successful when upgrading existing infrastructure

Building urban landscapes with smart technologies from scratch has sometimes produced futuristic-looking yet sterile environments that struggle to attract residents and justify high costs. Enhancing existing areas while retaining their historical and cultural touchstones has proven more appealing in many cities.

Taxi and ambulance drivers appear to have the lowest risk of dying from Alzheimer's disease out of 443 occupations, which suggests that constant real-time navigation work strengthens the hippocampus and may help protect against the disease.

Average citizens may be the greatest liability to smart cities

Smart cities utilize massive datasets to enhance mobility, resource utilization, and public safety. However, this data can also be compromised if mishandled by residents, making citizen awareness of risks a key component of cybersecurity efforts.

What is a smart city?

The internet of things and automation are two of the technologies used in smart cities. Learn about the technologies making cities more human-centric in this three-minute read.

Microforests in urban environments may help combat climate change

Areas of densely packed native trees and drought-tolerant plants within cities can pull carbon dioxide from the air, cool surrounding neighborhoods, and support local wildlife. The idea behind microforests traces back over 50 years to Japanese ecologist Dr. Akira Miyawaki, who promoted planting whole ecosystems to restore degraded land.

The benefits and risks of smart grids, from improved efficiency to cybersecurity risks

By using a network of devices, including digital meters, sensors, and controllers, smart grids can quickly detect mechanical issues and fluctuations in supply and demand, automatically adjusting electricity flow to prevent cascading failures. While this is important for variable solar and wind power generation, many of these computer systems are designed to be controlled remotely, which increases the risk of malicious access.

As of 2025, there are no federal laws involving privacy and smart city technologies

Advancements in cloud technology and artificial intelligence allow cities to capture, store, and analyze more information than ever before. Experts warn that the unhindered ability to collect and use this data may infringe on residents' rights and endanger them if the data gets into the hands of malicious parties.

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Greenhouse gases from farming are driven by meat

The food we eat contributes to one-third of global greenhouse gas emissions caused by human activities, according to two studies published in 2021. These emissions come from various sources along the food production chain, including transportation,...

In the V2X framework, vehicles are wireless connected to each other

Vehicle-to-everything systems would also connect cars to traffic infrastructure and pedestrians, enabling safer, quicker, and more efficient road transportation. Tests have been conducted to demonstrate the viability of this technology with both WiFi-based and cellular network-based systems.

Many issues facing urban environments cannot be solved by smart technologies

Although connecting systems to the Internet of Things can provide improved efficiency in municipal systems, problems such as limited affordable housing are driven by larger socioeconomic factors. Some experts suggest that local governments should focus resources on practical solutions to these issues rather than investing in smart technologies.

Digital twins create real-time 3D models of smart cities

These re-creations allow city planners to track changes and manage infrastructure more easily by testing strategies in virtual environments. Geospatial technologies, such as mobile mapping and satellite imaging, help cities assess urban layouts, plan for disasters, and manage resources more efficiently.

What rodent cars can tell us about human joy

Neuroscientist Kelly Lambert and her colleagues taught rats to drive in a mini car. She writes her findings from this unconventional experiment, sharing that positive and fun experiences can sculpt the brain just as powerfully as stressful ones. Click to learn more about how the apparent joy of these rodents seemed to enhance their neuroplasticity.

As of 2025, most EV batteries retain 95% or more of their range after three years

Data from over 30,000 electric vehicles shows that their batteries are lasting much longer than initially projected, which researchers suggest is due to improved battery management systems and real-world use often being less rigorous than high-performance testing. Cars with 150,000 miles or more that have not had a battery replacement retain at least 83% of their original range.

In 2019, Tesla's autopilot system misinterpreted emergency lights and crashed

A Tesla Model X collided with stopped emergency vehicles on a Texas highway when flashing lights created hazy images that the software could not interpret. The crash injured five people and hospitalized another person while highlighting the challenges of autonomous systems.

Smart cities without strong cybersecurity can leave utilities extremely vulnerable

Insecure devices connected to the Internet of Things pose risks to the entire network, which cybercriminals can hijack to compromise infrastructure and private resident data. Poorly secured systems that become inoperable can undermine the promise of smart cities by worsening the quality of life.

AI-powered models can provide low-cost, localized and accurate weather forecasting

These models can run on standard laptops, reducing the need for expensive supercomputers and expanding access to developing regions. AI forecasts can help farmers make informed planting decisions, improving crop yields and reducing costs.

The average electric vehicle motor has about 20 moving parts

The simpler design significantly reduces the energy lost to heat compared to the approximately 2,000 parts in a gas-powered car. Pollution is also lower, though an EV's emission profile is only as clean as the electric utility it's plugged into.

How congestion pricing is trying to fix downtowns

Billions of gallons of gas are wasted each year as US drivers sit in traffic losing billions of hours of time. The congestion problems big downtowns face has led to innovative interventions to try to stop the traffic, including congestion pricing, a...

Are smart cities a dumb idea?

Smart cities require vast troves of data to run, making their systems attractive to hackers. Listen to this one hour podcast to learn about the risks and what is being done to mitigate them.

Over-the-air updates, pioneered by Tesla, have become the industry standard

Tesla's innovative direct-to-consumer sales model and online ordering system changed car-buying, and the Model S, which had a 200-mile range, forced other automakers to enhance their EV offerings and rethink vehicle design.

Research suggests AI data centers may be creating microclimate heat islands

An analysis of satellite data from 2004 to 2024 showed that land surface temperatures in the areas surrounding AI data centers typically increase by an average of 2 degrees Celsius (3.6 degrees Fahrenheit) after they begin running. Across the 6,000 global data centers analyzed by the study, temperatures increased by as much as 9.1 degrees Celsius (16.4 degrees Fahrenheit).