Washington, DC (CNN Business)Tesla has said its latest version of Autopilot, its autonomous driving software, is able to stop at traffic lights. But some Tesla drivers are learning it doesn't just stop at red lights, it appears to slow down for green lights, too. Last Friday, Tesla drivers first reported receiving a software update that included "Traffic Light and Stop Sign Control," which is designed to slowdown and stop the vehicle for visible traffic lights or stop signs. Tesla (TSLA) describes the software as being in "beta," meaning it's unfinished and still officially in testing. It's designed to gradually improve as the artificial intelligence that powers it learns from the data that's being collected as Tesla cars drive on public roads, according to a notification in Tesla vehicles when the system is first activated.

A photograph shows a lone automobile among dozens of horse-drawn buggies on Manhattan's famed Fifth Avenue in 1900. Thirteen years later, another photo depicts the same thoroughfare clogged with gas-guzzling vehicles. The images illustrate how quickly transportation innovations can take hold in society, a mobility-minded futurist recently told Southern Nevada leaders. His name is Paul Godsmark, and he's co-founder of the Canadian Automated Vehicles Centre of Excellence. Godsmark's message: Autonomous vehicles could be the biggest thing to disrupt society since the Internet.