Humans cause most self-driving car accidents

Since 2014, there have only been 34 reported accidents involving self-driving cars on California roads, according to state incident reports — and most happened when a human-driven car rear-ended or bumped into a self-driving car stopped at a red light or stop sign, or driving at low speed.

Why it matters: A major benefit to self-driving cars is the potential to reduce traffic accidents caused by human error. While it's a small set of data, the low rate of accidents caused by self-driving cars underscores the technology's enhanced safety.

Data: State of California Department of Motor Vehicles; Icon: Guilhem / The Noun Project; Chart: Andrew Witherspoon / Axios