The article's subtitle states "New voluntary guidelines from NHTSA will allow cars specifically designed for Level 4 autonomous driving on the road" The first

The article's subtitle states "New voluntary guidelines from NHTSA will allow cars specifically designed for Level 4 autonomous driving on the road" The first link in the article's body points to "https://www.nhtsa.gov/DOCUMENT/ROAD-AHEAD" https://www.nhtsa.gov/DOCUMENT/ROAD-AHEAD" which redirects to "https://www.nhtsa.gov/sites/nhtsa.dot.gov/files/documents/12532-nhtsa-strategicplan-2016-2020.pdf" https://www.nhtsa.gov/sites/nhtsa.dot.gov/files/documents/12... => I did search for the strings "level 4" and level4" but did not get any hits => which page(s) is/are used as foundation for the article's subtitle mentioning "level 4"? EDIT: None of the links that I posted work directly (they're accessible only through https://spectrum.ieee.org/cars-that-think/transportation/self-driving/new-rules-of-the-road-allow-steeringwheelfree-cars https://spectrum.ieee.org/cars-that-think/transportation/sel... in the area at the top which states "blah blah... said today in an 80-page report") - don't know why the direct links aren't working... .