Imagry demonstrated its autonomous tech this week by driving through chaotic Tel Aviv traffic, successfully avoiding the kind of obstacles and hazards a busy city throws at a driver. Imagry’s system does use a basic navigation system, but not a specialized, highly detailed one developed for self-driving purposes.

“There is no industry standard. There are multiple paradigms being worked on by multiple companies,” Raj Rajkumar, an engineering and robotics professor at Carnegie Mellon University told Automotive News. “The best ideas will come out on top.”

But while Rajkumar thinks mapless systems, or ones using only basic map data, might be fine at lower levels of autonomy and maybe even at higher levels in good weather, he believes highly-detailed maps will be necessary in bad weather conditions.