by The Uncomfortable Truth About Car Autonomy
There is currently an uncomfortable truth surrounding cars and autonomous systems. These systems have become better than ever, which is great on one hand, but misleading on the other. Science has proven that humans struggle to maintain concentration in tasks where their direct interaction is rarely needed. According to the National Transportation Safety Board (NTSB), the combination of this factor and autonomous technologies played a role in two fatal accidents involving Ford’s BlueCruise technology.
On Tuesday, the agency concluded that over-reliance on this hands-free driver-assist technology contributed to separate accidents in Texas and Pennsylvania, which resulted in the deaths of three people.
What happened in these accidents?
In both cases, 2022 Ford Mustang Mach-Es traveling with the BlueCruise system engaged crashed at full speed into stationary vehicles on the highway. Incredibly, investigators found no driver intervention—braking, steering—nor any intervention from the automatic emergency braking system in the moments before the collision. In other words, it appears that both drivers trusted the system too much and paid insufficient attention to the road.
One of the accidents occurred in San Antonio on February 24, 2024, when a Mach-E traveling on Interstate 10 crashed into a stopped 1999 Honda CR-V. The Honda driver died. A week later, on March 3, another Mach-E with BlueCruise engaged crashed into stopped Hyundai Elantra and Toyota Prius vehicles on Interstate 95 in Philadelphia, killing both drivers.
In addition to accusations against the drivers, the NTSB also directed criticism straight at Ford and the federal government. According to the board, the BlueCruise driver monitoring system failed to adequately detect that the drivers were actually not paying attention.
The system reportedly allowed prolonged glances away from the road and could not reliably distinguish whether the driver was watching the road or staring at a phone blocking the view. This is a serious problem, as BlueCruise is marketed as a hands-free system. Ford allows drivers to take their hands off the wheel on pre-mapped highways, but the company still states that drivers must remain alert and ready to intervene at any moment.
Limitations of the Driver Monitoring System
Even worse, investigators also found that Ford allows drivers to weaken or essentially bypass some of the vehicle’s safety features while BlueCruise is active. Drivers can completely turn off automatic emergency braking, and adaptive cruise control can be set to a speed up to 20 mph above the posted limit. The NTSB states that such a combination can sharply reduce the system’s effectiveness and increase the severity of accidents.
Ford states that there were no equipment defects in either accident and that alcohol impairment played a role in at least one of them. For now, the NTSB recommends that Ford adjust the system to better detect driver inattention, reduce the system’s ability to exceed speed limits, and require that key safety systems always remain activated.
While Ford addresses this issue, the National Highway Traffic Safety Administration (NHTSA) is conducting three investigations into BlueCruise. Many changes to Ford’s autonomous technologies can be expected this year.
These events raise important questions about the pace of implementing semi-autonomous technologies and the responsibility of manufacturers. On one hand, systems like BlueCruise promise increased comfort and safety by reducing driver fatigue on long journeys. On the other hand, they create a dangerous illusion of full autonomy, especially when their operation is reliable in most situations. This can lead to drivers psychologically “switching off,” losing readiness for a sudden system malfunction or an unpredictable situation on the road, such as a stopped vehicle. The development of technology is outpacing the formation of clear regulatory frameworks and even public understanding of its real capabilities and limitations. The future of such systems will likely depend not only on technical improvements in driver monitoring but also on profound changes in approaches to driver training and risk communication, so that “driver assistance” does not turn into a replacement for the driver in the user’s mind.
