What are the next steps to reaching Level 4 autonomy?

With several Level 3 autonomous cars taking to the road in the last few years, Level 4 autonomy must surely be just around that next bend. And while it’s certainly a matter of ‘when’ not ‘if’, there remains much work to do as the industry, legislators and consumer gear-up for what Level 4 really means.

https://www.automotiveworld.com/articles/what-are-the-next-steps-to-reaching-level-4-autonomy/