TRAVERSE CITY, Mich. — Advanced driver-assistance systems are commonly seen as the building blocks of fully self-driving vehicles. However, industry executives increasingly consider advanced driver-assist and autonomous capabilities separate systems evolving at different speeds to serve different markets.
"They use a lot of the same sensors, but the difference is that on the Level 2 vehicle, the most capable sensor in the vehicle is a human," Nick Sitarski, Toyota vice president of integrated vehicle systems, said during a Tuesday panel at the Center for Automotive Research's Management Briefing Seminars here.
Level 4 systems, by comparison, require far more technology because they allow the vehicle to drive itself under most conditions.
"You need to re-create what the human is doing ... and that's a very complex and costly thing to do," Sitarski said.
That's why the first autonomous vehicles deployed onto streets will b…