The self-driving car traffic jam is coming to US cities

The Rise of Self-Driving Cars and the Urban Challenge

A century ago, a surge of automobiles transformed American cities, leading to increased pedestrian fatalities, the decline of streetcars, and a shift in urban life that prioritized cars over people. Car owners' loud horns and the chaos of traffic forced city officials to pave over green spaces, reduce sidewalks, and criminalize jaywalking. This shift left cities less vibrant and less livable, with drivers enjoying unchallenged road dominance.

Today, self-driving cars are set to bring another major transformation in transportation. Once limited to select areas like San Francisco and Phoenix, autonomous vehicles (AVs) are now being used by companies such as Waymo, Tesla, and Zoox across cities including Austin, Los Angeles, Las Vegas, Dallas, New York City, Philadelphia, and Miami. Ride-hail companies like Uber are also joining the movement, with plans to deploy thousands of robotaxis using self-driving systems from Nuro.

AVs offer several advantages: they cannot drive drunk, distracted, or tired, making car trips easier and less stressful. However, their widespread use could lead to severe congestion, worsening the divide between those in AVs and those stuck in traffic. The rise of ride-hail services has already increased driving, thickened congestion, and undermined public transit. AVs, with their privacy and consistency, could exacerbate this issue.

Cities must act now to ensure that AVs enhance rather than harm urban life. Here are some steps to consider:

Put a Price on Congestion

As AVs become more common, cities should prepare for an increase in traffic. People may take more trips, and deliveries could skyrocket. Deadheading—vehicles driving empty—could also worsen congestion. A solution is to implement congestion pricing, similar to New York City’s model, which charges cars entering Manhattan during weekdays. This approach has reduced traffic and improved conditions. Cities could also consider mileage-based fees for AVs and ride-hail cars when not carrying passengers.

Get a Handle on the Curb

AVs will change how we think about parking. Unlike traditional cars, they don’t need to find a spot after dropping off passengers. However, this raises questions about where AVs will stop. Cities should identify optimal pickup and drop zones to avoid disrupting traffic. Creating a digital map of curbs can help manage curb use and reduce double parking. Some cities, like Philadelphia, have piloted smart loading zones that allow vehicles to reserve spots through apps.

Stop Building New Parking (and Charge Market Prices for Existing Spots)

As AVs become more prevalent, demand for parking will decrease. Cities can repurpose parking spaces for housing, parks, or other uses. Eliminating parking minimums, which require new developments to include fixed parking spots, can reduce construction costs and encourage alternative transportation modes. Charging dynamic market rates for street parking can create availability and provide revenue for the city.

Automate Enforcement

Self-driving cars have caused issues on public streets, such as interrupting emergency vehicles and pulling over in no-stopping zones. Cities should use technology to enforce traffic laws, regardless of whether a human or algorithm is at fault. Automatic cameras, proven effective in many countries and U.S. states, can deter violations and ensure compliance. Loosening restrictions on camera use could help cities enforce laws more effectively.

Solving for the Present as Well as the Future

The transition to AVs presents both challenges and opportunities. While the timeline for universal AV adoption remains uncertain, cities must act now to ensure that policies support sustainable and equitable urban development. By implementing congestion pricing, managing curbs, rethinking parking, and automating enforcement, cities can prepare for a future where AVs enhance, rather than hinder, urban life. The time to act is now.