Tag: Self-driving Cars

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Transport Authority Stops Cruise Robocabs

NBC BAY AREA reported on August 10, 2023: “California regulators on Thursday approved an expansion that will allow two rival robotaxi services to operate throughout San Francisco at all hours, despite safety worries spurred by recurring problems with unexpected stops and other erratic behavior that resulted in unmanned vehicles blocking traffic, including emergency vehicles.” (NBC BAY AREA, 10 August 2023) Oliver Bendel wrote on August 11, 2023 on Robophilosophy: “It is highly likely that accidents will occur, including personal injury. A city is a highly complex environment, and the technology for autonomous driving is far from mature. In addition, the population and tourists are not sufficiently prepared for this form of traffic.” According to several media outlets in late October 2023, Cruise is no longer allowed to send driverless cars on the streets of San Francisco for the time being after two accidents involving pedestrians. In early October, a woman was pinned under a fleet vehicle and dragged for several feet. This type of automated driving is still far from mature.

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Expansion of Robocar Operations in Frisco

Robot cabs have been seen in San Francisco for years, first by Uber, then by Cruise and Waymo. But there have been various restrictions on their operation in the past. NBC BAY AREA reported on August 10, 2023: “California regulators on Thursday approved an expansion that will allow two rival robotaxi services to operate throughout San Francisco at all hours, despite safety worries spurred by recurring problems with unexpected stops and other erratic behavior that resulted in unmanned vehicles blocking traffic, including emergency vehicles.” (NBC BAY AREA, 10 August 2023) It goes on to say: “The California Public Utilities Commission voted to approve rival services from Cruise and Waymo to operate around-the-clock service. It will make San Francisco first major U.S. city with two fleets of driverless vehicles competing for passengers against ride-hailing and taxi services dependent on humans to operate the cars.” (NBC BAY AREA, 10 August 2023) It is highly likely that accidents will occur, including personal injury. A city is a highly complex environment, and the technology for autonomous driving is far from mature. In addition, the population and tourists are not sufficiently prepared for this form of traffic.

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Self-driving Cars Stopped by Fog

“Five self-driving vehicles blocked traffic early Tuesday morning in the middle of a residential street in San Francisco’s Balboa Terrace neighborhood, apparently waylaid by fog that draped the southwestern corner of the city.” (San Francisco Chronicle, 11 April 2023) The San Francisco Chronicle reported this in an article published on April 11, 2023. The fact that fog is a problem for Waymo’s vehicles has been known to the company for some time. A blog post from 2021 states: “Fog is finicky – it comes in a range of densities, it can be patchy, and can affect a vehicle’s sensors differently.” (Blog Waymo, 15 November 2021) Against this background, it is surprising that vehicles are allowed to roll through the city unaccompanied, especially since Frisco – this name comes from sailors – is very often beset by fog. But fog is not the only challenge for the sensors of self-driving cars. A thesis commissioned and supervised by Prof. Dr. Oliver Bendel presented dozens of phenomena and methods that can mislead sensors of self-driving cars. The San Francisco Chronicle article “Waymo says dense S.F. fog brought 5 vehicles to a halt on Balboa Terrace street” can be accessed at www.sfchronicle.com/bayarea/article/san-francisco-waymo-stopped-in-street-17890821.php.

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Towards Human-friendly Robot Cars

According to a news story by University of Leeds, robot cars and other automated vehicles could be made more pedestrian-friendly thanks to new research which could help predict when people will cross the road. Leeds scientists say “that neuroscientific theories of how the brain makes decisions can be used in automated vehicle technology to improve safety and make them more human-friendly” (University of Leeds, 5 October 2021). “The researchers set out to determine whether a decision-making model called drift diffusion could predict when pedestrians would cross a road in front of approaching cars, and whether it could be used in scenarios where the car gives way to the pedestrian, either with or without explicit signals. This prediction capability will allow the autonomous vehicle to communicate more effectively with pedestrians, in terms of its movements in traffic and any external signals such as flashing lights, to maximise traffic flow and decrease uncertainty.” (University of Leeds, 5 October 2021) In fact, communication between automated vehicles and pedestrians or cyclists is the crucial problem to be solved in cities. Predictive models can be used, as well as communication options such as eye contact and natural language. For this to happen, however, the autonomous car would have to become a social robot.

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Young Girls could Kill Autonomous Driving

On behalf of Prof. Dr. Oliver Bendel, M. Hashem Birahjakli investigated possible attacks on self-driving cars as part of his final thesis in 2020. The supervisor was Safak Korkut. In the chapter “Attacking Scenarios on Sensors” the student divided into invasive attacks and non-invasive attacks. In the section on invasive attacks he dealt with different sensors and examined possible attacks based on scenarios: vision-based cameras (chewing gum, lipstick, and nail polish; spraying paint; transparent colored foil; concave lenses), radar (chaff, countermeasure), lidar (mirror and reflective objects; dust; face powder), inertial measuring unit (magnet), and sonar (carrot and stick; duct tape). In the section on non-invasive attacks he dealt with fake traffic signs, invisible or fake obstacles, and roadside attacks. The results of the work suggest that every 14-year-old girl could disable a self-driving car. So far, hacking has been seen as the greatest threat to autonomous driving. But while not everyone can hack, almost everyone carries chewing gum or lipstick. The automotive industry should consider this threat seriously.