Waymo's autonomous taxis are facing an unusual operational challenge: passengers falling asleep during rides, triggering emergency calls that strain municipal resources and complicate the robotaxi rollout. In Austin alone, police and firefighters recorded 99 such incidents in Waymo's first nine months of service, a phenomenon so common that first responders have given it a name: "sleepers." When passengers lose consciousness in a driverless car, remote operators monitoring the vehicles through interior cameras attempt to rouse them via speakers, but if they get no response, company protocols often require calling 911.

Why Are Robotaxi Passengers Falling Asleep?

The problem stems from a fundamental difference between traditional taxis and autonomous vehicles. In a human-driven cab, a driver can shout, shake, or otherwise alert a sleeping passenger. In a robotaxi, there is no one physically present to intervene. Passengers, particularly those returning home late at night from social events or after consuming alcohol, are simply drifting off in the comfort of the autonomous vehicle, unaware that their inaction is triggering emergency protocols.

One Los Angeles passenger, Ditto Kasendar, experienced this firsthand. After riding home from a friend's birthday party, he fell asleep to soft music playing through the car's speakers. His six-minute trip ended nearly an hour before he woke up, with Los Angeles firefighters opening the door to check on him. "I was like, 'Oh my god, what happened?'" Kasendar recalled.

What Other Challenges Are Robotaxis Facing Beyond Sleeping Passengers?

The sleeping passenger issue is just one symptom of a larger problem: autonomous vehicles must now manage unpredictable human behavior without a driver present to maintain order. Beyond passengers nodding off, robotaxis are dealing with a range of messy real-world scenarios:

• Medical Emergencies: Passengers have experienced heart attacks, given birth, and suffered other acute health crises while in autonomous vehicles, requiring emergency response coordination.
• Vehicle Cleanliness Issues: Riders are spilling drinks, dropping food, vomiting, and leaving trash, forcing companies to implement cleaning fees and hire specialized contractors to handle biohazards.
• Infrastructure Disruptions: In San Francisco, more than 60 Waymos were paralyzed on city streets after a December blackout, blocking first responders and requiring manual removal.
• Emergency Scene Interference: The National Highway Traffic Safety Administration (NHTSA) sent letters to autonomous driving companies noting that some vehicles have driven through emergency scenes, ignoring flares and traffic cones and obstructing ambulances.

Austin emergency responders estimate that only about 3% of "sleeper" calls actually require transporting the passenger to a hospital. Yet each call ties up personnel who might be needed for genuine emergencies. "We don't want to commit a significant number of resources to these calls when, statistically, we know that most of the time, these people do not need further medical treatment," said Roger Patterson, a commander with Austin-Travis County Emergency Medical Services, during an April city council meeting.

How Are Robotaxi Companies Responding to These Operational Challenges?

Waymo and other autonomous vehicle operators are implementing systems to manage passenger behavior and vehicle cleanliness. Waymo prompts users to report their own spills and charges a $50 cleaning fee that increases to $100 if the next passenger discovers the mess first. Repeat offenders face higher charges for trash and smoking violations. Tesla charges $50 for moderate messes like food spills or dirt, and $150 for smoking or biohazard incidents. Amazon-owned Zoox has similar protocols.

The companies are also investing in specialized support infrastructure. Waymo maintains a team of U.S.-based remote assistants dedicated to coordinating with first responders during emergencies. These operators can access interior camera footage to conduct cleanliness checks and monitor for unusual activity. When vehicles return to depots for charging, workers clean them, with extra pay for handling biohazards. A recent job listing for an autonomous vehicle cleaner posted by Moove, Waymo's fleet partner in Miami, explicitly mentioned "respond to biohazard incidents (vomit, blood, spills) per OSHA bloodborne pathogen protocol" as a job responsibility.

Waymo

"Life happens, which is why we have robust systems and trained professionals ready to support our riders and fleet when it does. Since Waymo is a shared space, we ask riders to treat the vehicles with respect and let us know if a car needs more attention so it stays clean and pristine for the next person," said a Waymo spokesperson.

Waymo Spokesperson

What Are Experts Saying About the Burden on Cities?

Legal and policy experts argue that cities are effectively subsidizing the research and development of autonomous vehicles by absorbing these operational costs. Bryant Walker Smith, an associate law professor at the University of South Carolina specializing in automated vehicle technology, noted that when local governments absorb responsibility for managing these incidents, it reduces the incentive for companies to solve the problems themselves.

Fire chiefs and emergency responders are also calling for standardized procedures across all robotaxi operators. Tom Dwiggins, fire chief of Chandler, Arizona, a suburb served by Waymo, emphasized the need for consistency. "We would love to see one standard approach across the board. If you expect a firefighter in a four-minute response to look up research, try to figure out which vehicle it is, what type of platform it's on, what company, that's not going to happen," Dwiggins stated.

Steps for Cities to Manage Robotaxi Operations

As robotaxi services expand, municipalities need clear frameworks to handle the operational challenges these vehicles create. Here are key steps cities should consider implementing:

• Standardized Emergency Protocols: Work with robotaxi operators to establish uniform procedures for emergency response, vehicle immobilization, door access, and remote assistant contact information so first responders can act quickly without confusion.
• Data Transparency Requirements: Mandate that robotaxi companies publicly report statistics on emergency calls, medical incidents, and cleanliness issues so cities can accurately assess the resource burden and plan accordingly.
• Operator Training and Certification: Require robotaxi companies to train their remote support staff on recognizing medical emergencies, communicating with first responders, and de-escalating situations before they require 911 intervention.
• Cost Recovery Mechanisms: Establish fee structures or agreements where robotaxi companies reimburse cities for emergency response costs related to their operations, creating financial incentives for companies to reduce preventable incidents.

The robotaxi industry is still in its early stages, and these operational challenges reflect the gap between technological capability and real-world human behavior. While autonomous vehicles may eventually prove safer than human-driven cars, the current rollout is revealing that driverless transportation requires far more than just reliable self-driving technology. It requires systems to manage the messy, unpredictable reality of human passengers.

Most host cities have been reluctant to publicly discuss these problems. San Francisco, ground zero for autonomous vehicle testing and deployment, did not disclose its incident numbers despite repeated requests, though Austin officials revealed that San Francisco experienced 250 such incidents in 2025. As robotaxi services expand to more cities, the pressure on municipalities to address these operational challenges will only increase, forcing both companies and governments to develop better solutions before the technology scales further.