This is the best summary I could come up with:

Tesla’s recall of more than 2 million of its electric vehicles — an effort to have drivers who use its Autopilot system pay closer attention to the road — relies on technology that research shows may not work as intended.

But research conducted by NHTSA, the National Transportation Safety Board and other investigators show that merely measuring torque on the steering wheel doesn’t ensure that drivers are paying sufficient attention.

“I do have concerns about the solution,” said Jennifer Homendy, the chairwoman of the NTSB, which investigated two fatal Florida crashes involving Teslas on Autopilot in which neither the driver nor the system detected crossing tractor trailers.

Missy Cummings, a professor of engineering and computing at George Mason University who studies automated vehicles, said it’s widely accepted by researchers that monitoring hands on the steering wheel is insufficient to ensure a driver’s attention to the road.

But they don’t see well at night, unlike those in General Motors or Ford driver monitoring systems, said Philip Koopman, a professor at Carnegie Mellon University who studies vehicle automation safety.

Kelly Funkhouser, associate director of vehicle technology for Consumer Reports, said she was able to use Autopilot on roads that weren’t controlled access highways while testing a Tesla Model S that received the software update.

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