Following its investigation

Google Built-in, which is also in brands like Chevrolet, Renault, Polestar and Honda, relies on Maps rather than just the car’s cameras to get accurate speed limits.

The Maps team analyzes traffic trends, gathers local data and cross-references street view or third-party partner data, according to a blog post by Siddharth Shashidharan, a Google Maps product manager.

Appealing to automakers
Following its investigation in the Las Vegas crash, the NTSB also asked 17 automakers, including BMW, Ford, General Motors, Honda and VW, to equip new vehicles with speed-assistance features.