An Autonomous Car Blocked a Fire Truck Responding to an Emergency

On an early April morning, around 4 am, a San Francisco Fire Department truck responding to a fire tried to pass a doubled-parked garbage truck by using the opposing lane. But a traveling autonomous vehicle , operated by the General Motors subsidiary Cruise without anyone inside, was blocking its path. While a human might have reversed to clear the lane, the Cruise car stayed put.

The fire truck only passed the blockage when the garbage truck driver ran from their work to move their vehicle. “This incident slowed SFFD response to a fire that resulted in property damage and personal injuries,” city officials wrote in a filing submitted to the California Public Utilities Commission. The city wrote that the fire department is concerned that Cruise vehicles stop too often in travel lanes, which could have a “negative impact” on fire department response times.

It’s the most unnerving of a handful of incidents involving Cruise vehicles alleged by the city of San Francisco, as officials object to parts of a proposed permit program being crafted by the California Public Utilities Commission, which regulates ride-hail across the state. Tiffany Testo, a spokesperson for Cruise, confirmed the incident. She said the driverless car had correctly yielded to the oncoming fire truck in the opposing lane and contacted the company’s remote assistance workers, who are able to operate vehicles in trouble from afar.

According to Cruise, which collects camera and sensor data from its testing vehicles, the fire truck was able to move forward 25 seconds after it first encountered the autonomous vehicle. In a statement, Testo says that Cruise “works closely with first responders, including SFFD, and have been in contact with them regarding this encounter. ” The city’s filing said the department has requested a meeting with Cruise about the incident, but that it has yet to take place.

SFFD and the San Francisco Municipal Transportation Agency, which regulates the city’s streets, did not respond to requests for comment. Even as autonomous vehicle software advances, it will continue to run into these flukes. In San Francisco, Cruise is just one of the dueling self-driving car developers that say they’re working to build a safer driving future.

Waymo , an Alphabet company and a spinoff from Google, and Zoox, now owned by Amazon , both have a presence on the city’s steep, winding roads, and locals don’t have to travel far to see sensor-laden Jaguar I-Paces , Chevrolet Bolts , and Toyota Highlanders tracing routes around downtown and residential neighborhoods. Now Cruise is applying for a permit that would allow it to launch the state’s first driverless ride-hail service. The sprawling, expensive science experiment could also change the way many city dwellers navigate their cities.

San Francisco alleges two more incidents: one, in late April, in which a Cruise vehicle traveling through a work zone stopped in a crosswalk and didn’t move for five minutes, blocking traffic; and another in April, captured on camera , in which police officers stopped a Cruise vehicle without a driver because it didn’t have its headlights on. The filing comes as a state agency is in the midst of writing rules that would allow Cruise to move ahead with its plans to operate limited but paid ride-hail services across the state. In San Francisco, a new permit would expand Cruise’s existing program.

It currently allows hand-picked members of the public to take autonomous rides between 11 pm and 5 am, and only on the city’s west side, which tends to be less trafficked. If the company wins a new permit, it could start to collect fares for the rides, which would still occur at night and in the early morning, and not in rain or fog. It would mark the launch of the state’s first driverless ride-hail service.

But in the filing, San Francisco officials express concern about proposed provisions in the permit that would let Cruise vehicles continue to stop to pick up and drop off passengers in travel lanes, instead of pulling over to the curb. Human drivers can be ticketed if they are caught failing to pull 18 inches or closer to curbs before they let passengers in or out of cars. But in its own filing, a lawyer for Cruise argued the law allows any car to stop in a travel lane if it’s “reasonably necessary”—even if there’s no human driver behind the wheel.

The Cruise software defaults to pulling over to curbs when safe, the company says, but cars sometimes engage in “lawful and safe double parking” when it is the only option. The city’s document noted that, “with some conspicuous exceptions,” Cruise’s vehicles are generally “cautious and compliant. ” The fire truck incident is a classic “corner case”—a road incident so strange or rare that it can be hard for self-driving vehicle developers to anticipate it.

Experts say that even as autonomous vehicle software advances, it will continue to run into these fluke s. Corner or edge cases are one reason many companies like Cruise hire humans to remotely monitor their driverless technology , to intervene from afar if anything unexpected happens on the road. They also help explain why many in the industry now concede that no one will ever build a car that can operate on all roads, in all conditions—what people call “Level 5” or “full” self-driving.

Still, automakers and software developers are spending plenty to get as close to that ideal as they can. General Motors and Cruise say they will pour $35 billion into electric and autonomous vehicles by 2025, and $2 billion into AVs this year alone . The automaker initially missed a self-imposed deadline , after it said it would launch a driverless ride-hail service in San Francisco in 2019.

The delay reflects wider doldrums in the autonomous vehicle space, as some competitors— Uber , Lyft—sold their self-driving units and others missed much-publicized targets for producing a self-driving car. In the interim, a set of well-capitalized players keep hacking away at the problem. Waymo continues to expand its self-driving car service in Phoenix, though customers have to gain access to a “trusted tester” program, and some of its vehicles still operate with safety drivers behind the wheel.

In March, the company said it began to offer San Francisco employees totally driverless rides. The startup Aurora has shifted its focus to trucking . Amazon-owned Zoox this week unveiled its prototype vehicle , a mint-green toaster on wheels .

And Cruise says its purpose-built self-driving shuttle, called the Origin , will go into production next year. But before they get very far, self-driving car developers will have to prove that they can operate in cities safely, especially when emergency vehicles are involved. .