In self- driving cars, human drivers come up short
Autonomous cars should be required to meet standards on their ability to detect potential hazards and better ways are needed to keep their human drivers ready to assume control, US auto safety and technology experts said after fatal crashes involving Uber Technologies and Tesla vehicles.
Automakers and tech companies rely on human drivers to step in when necessary with self-driving technology. But in the two recent crashes, which involved vehicles using different kinds of technologies, neither of the human drivers took any action before the accidents.
Driverless cars rely on lidar, which uses laser light pulses to detect road hazards, as well as sensors such as radar and cameras. There are not, however, any standards on the systems, nor do all companies use the same combination of sensors, and some vehicles may have blind spots. Queue the music for the human driver — music that drivers often find difficult to hear. “Humans don’t have the ability to take over the vehicle as quickly as may be expected” in those situations, said self-driving expert and investor Evangelos Simoudis.
In the Uber crash last month, the ride services company was testing a fully driverless system intended for commercial use when the prototype vehicle struck and killed a woman walking across an Arizona road. Video of the crash, taken from inside the vehicle, shows the driver at the wheel, who appears to be looking down and not at the road. Just before the video stops, the driver looks upwards toward the road and suddenly looks shocked.
In the Tesla incident last month, which involved a car that any consumer can buy, a Model X vehicle was in semi-autonomous Autopilot mode when it crashed, killing its driver. The driver had received earlier warnings to put his hands on the wheel, Tesla said.
Some semi-automated cars, like the Tesla, employ different technologies to help drivers stay in their lane or maintain a certain distance behind the vehicle in front. Those systems rely on alerts — beeping noises or a vibrating steering wheel — to get drivers’ attention.