Waymo robotaxis are returning to American freeways after the autonomous-driving company temporarily restricted highway operations to address a software problem involving construction zones.
The gradual return began in Phoenix on July 29, 2026. Waymo plans to restore freeway routes in Miami, Los Angeles and the San Francisco Bay Area, although the company has not provided an exact reopening date for every market. Riders must initially express interest through the Waymo app and wait until freeway access is enabled for their accounts.
The restart is significant because freeway access can dramatically reduce journey times across large metropolitan areas. It is also an important safety test for Waymo, which recalled software installed in thousands of vehicles after robotaxis entered closed or active freeway construction areas.
Why Waymo Stopped Using Freeways
Waymo restricted freeway driving in May after several incidents involving its fifth-generation automated driving system.
According to the company’s official recall filing with the National Highway Traffic Safety Administration, Waymo reviewed one incident from April 11 and five incidents from April 19 in Phoenix. In those cases, autonomous vehicles failed to recognise ramp-closure signs and entered planned freeway construction zones.
A more serious series of events occurred in the San Francisco Bay Area on May 18. Seven Waymo vehicles drove between cones marking lane closures and entered freeway lanes where construction was taking place. The automated-driving system either failed to recognise the construction zone or prioritised avoiding other perceived hazards over respecting the lane closure.
Waymo’s safety committees initially introduced operational restrictions while the company investigated the causes. On June 8, its Safety Board decided that a formal recall was necessary.
The recall covered 3,871 fifth-generation automated-driving systems installed in vehicles capable of operating without a human driver on freeways. NHTSA warned that entering a closed construction area while travelling at freeway speed could significantly increase the risk of a collision.
What Waymo Changed Before Returning
Waymo’s remedy went beyond a basic map update. The company changed how its software recognises, evaluates and responds to construction zones.
The updated system is intended to identify freeway construction areas more reliably and give those areas greater priority when the vehicle is evaluating multiple hazards. When a Waymo detects that it may have entered a construction zone, the vehicle should now reduce its speed rather than continuing at normal freeway pace.
The update also improves how the autonomous-driving system responds to authorised emergency vehicles near construction areas. This matters because emergency vehicles, temporary barriers, unusual lane markings and changing traffic patterns can create a situation that differs considerably from the normal road layout stored in a map.
Waymo has also introduced operational changes designed to identify planned construction before a vehicle reaches it. The company expanded its Remote Assistance capabilities so human support personnel can provide additional contextual information when a robotaxi encounters an unusual or uncertain freeway situation.
Remote Assistance does not mean a human remotely drives the vehicle. Instead, support personnel can provide information that helps the automated system understand an unfamiliar scene while the Waymo Driver remains responsible for controlling the car.
The Software Recall Has Been Completed
Waymo began installing the updated automated-driving software on June 16. The company’s regulatory filing states that all vehicles capable of driverless operation had received the remedy by June 29.
The filing also notes that limited freeway operations began resuming on June 25. That earlier activity appears to have been part of a controlled operational return, while the July 29 announcement marks the wider reintroduction of freeway routes for Waymo passengers in Phoenix.
Because Waymo owns and operates the affected vehicles, individual consumers did not need to arrange repairs or visit a dealership. The company deployed the software directly across its fleet.
The return remains gradual rather than immediate. Waymo is not activating freeway access for every rider or every journey at the same time. This controlled approach allows the company to monitor how the software performs before making the feature broadly available.
How Riders Can Access Freeway Routes
Phoenix riders interested in freeway journeys can join an interest list through the Waymo app. They will receive a notification when their account becomes eligible for the feature.
Even after freeway access is approved, a Waymo ride is not guaranteed to use the highway. The system may choose a surface-street route when traffic, road closures, construction or other known conditions make the freeway less appropriate. Riders can review the suggested route and estimated arrival time before confirming a trip.
This makes the feature different from a manual navigation setting that forces the vehicle to use highways. Waymo’s system determines the route based on the conditions it expects to encounter and the operating areas approved for autonomous service.
The company says Phoenix is the first market in the current reopening process. Freeway routes are expected to return to Miami, Los Angeles and the Bay Area after the initial rollout progresses.
Why Freeway Access Matters for Robotaxis
Surface streets are sufficient for short urban journeys, but they can make longer trips inefficient. A vehicle travelling between distant neighbourhoods may need to stop repeatedly at traffic lights and travel through crowded commercial areas.
Freeways can shorten those journeys and make robotaxis more competitive with traditional ride-hailing services. They are especially important for airport connections and trips that cross large metropolitan areas.
However, freeway driving creates a different set of challenges. Vehicles travel at higher speeds, which leaves less time to respond when conditions change. Construction zones may redirect traffic with temporary signs, cones, workers and lane markings that differ from the permanent road design.
A human driver can sometimes interpret an improvised construction layout using gestures, context and experience. An autonomous system must combine information from cameras, radar, lidar, maps and behavioural prediction to reach the same conclusion.
Waymo’s recall shows that even a system capable of completing millions of driverless miles can encounter uncommon combinations of road conditions that expose weaknesses in its decision-making.
Waymo’s Safety Record Remains Under Scrutiny
Waymo maintains that its autonomous-driving system has a lower rate of serious crashes than human drivers in the cities where it operates. The company’s public safety dashboard reported 220.6 million rider-only miles through March 2026 and compared its collision record with human-driving benchmarks.
According to Waymo’s analysis, its robotaxis experienced 94 percent fewer serious-injury-or-worse crashes and 82 percent fewer injury-causing crashes than the expected human-driver benchmark over comparable distances. These figures include crashes regardless of which party was considered responsible.
However, the dashboard’s primary comparisons focus on surface-street operations. Freeways introduce different speeds, merging patterns and hazards, so the existing figures should not automatically be treated as a complete measure of freeway safety.
The construction-zone incidents also illustrate why aggregate crash statistics do not eliminate the need to investigate unusual behaviour. A system can perform well overall while still having a specific weakness that requires immediate correction.
Regulators Are Paying Closer Attention
The freeway restart comes as autonomous-vehicle companies face increasing scrutiny from federal regulators and local authorities.
San Francisco officials have called for stronger requirements governing how robotaxis respond to emergencies and unusual traffic events. Those concerns intensified after Waymo vehicles reportedly contributed to congestion during major public events in the city.
The National Highway Traffic Safety Administration can investigate autonomous-driving defects, require recalls and request detailed information about incidents. Waymo’s freeway construction recall demonstrates that software-controlled fleets remain subject to the same fundamental safety obligations as conventional vehicles.
The difference is that software remedies can be deployed across an entire fleet without replacing a physical component. This allows a company to respond quickly, but it also means one software problem can potentially affect thousands of vehicles simultaneously.
The Freeway Return Is a Critical Test for Waymo
Restoring freeway routes could make Waymo significantly more useful for longer journeys, airport trips and travel across large cities. It also places the updated software back into the environment that produced one of the company’s most important recent recalls.
Waymo says its changes improve construction-zone recognition, hazard prioritisation, speed reduction and access to Remote Assistance. The controlled Phoenix rollout should provide an early indication of whether those changes perform reliably under real-world conditions.
The company’s decision to suspend operations, issue a recall and introduce a gradual restart shows how autonomous-driving systems can be updated when a specific risk is identified. It also highlights how much responsibility companies carry when software, rather than a human driver, makes every decision at freeway speed.
Waymo’s return to highways is therefore more than a route expansion. It is a public demonstration of whether the company has successfully corrected the behaviour that caused robotaxis to enter restricted construction areas in the first place.
