A
preliminary study on
the safety of self-driving vehicles conducted by The Univeristy of
Michigan Transportation Research Institute revealed autonomous cars are
responsible for more accidents than their human-driven coutnerparts.
But, the numbers might not be telling the whole story.
Lost in the whirlwind of big headlines about
killer robot cars was this seemingly important bit of information found right in the beginning of the study:
“Two important caveats should be considered when interpreting the
findings. First, the distance accumulated by self-driving vehicles is
still relatively low (about 1.2 million miles, compared with about 3
trillion annual miles in the U.S. by conventional vehicles) … Therefore,
their exposure has not yet been representative of the exposure for
conventional vehicles.”
Tiny things like lack of a representative sample size have been known to
make numbers tell a story that might not be at all indicative of the
facts. Brandon Schoettle, one of the study’s authors agrees.
He told NBC:
“One might conclude that self-driving vehicles are more dangerous, but I
don’t think the data actually show[s] that right now. They appear to be
more likely to be involved in crashes in general (though not at fault
and always being hit by conventional vehicles), but the injuries that
occurred were less severe, and all minor so far.”
The data showed a total of 11 crashes among three makers of self-driving
cars, Google, Delphi and Audi. All 11 crashes and the bulk of the 1.2
million miles driven on public roads occurred in the Google autonomous
vehicle.