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Other premium automakers have automatic braking and pre-collision systems that take effect regardless of whether the (enhanced) cruise control is engaged. We h
by niftich 10y ago
Other premium automakers have automatic braking and pre-collision systems that take effect regardless of whether the (enhanced) cruise control is engaged.
We have seen from other incidents that Tesla's autobraking will not engage when autopilot is disabled (potentially by tapping the brakes), which is contrary to widespread user expectation -- disclaimers notwithstanding.
However, in this particular case, it was the obstruction detection that failed. Based on their blog post disclaimer, it appears to be a visual sensing system; eye-height radar-based system used by most other manufacturers would have correctly detected the obstruction.
Is there an industry standard (yet) for the efficacy and behavior that these systems must meet?
- michalnaka 10y agoWhich manufacturers use eye-height radar-based systems?
- niftich 10y agoI stand corrected about the term 'eye-height' -- apparently no one I could credibly find mounts their radar at eye-height. Mercedes-Benz uses two different radar sensors: "the DISTRONIC radar is configured to monitor three lanes of a motorway to a range of up to 150 metres with a spread of nine degrees, the new [DISTRONIC PLUS] 24-Gigahertz radar registers the situation immediately ahead of the vehicle with aspread of 80 degrees and a range of 30 metres." [1] Volvo has a combination of grill-mounted 15° FOV radar and a 48° FOV greyscale camera behind the top of the windshield [2]. Volkswagen uses radar [3], but not sure where it's mounted. Honda's CMBS is a radar in the grill [4]. Subaru uses two cameras mounted behind the top of the windshield [5], and no radar, albeit radar is used with some of their other safety systems. [1] http://www-nrd.nhtsa.dot.gov/pdf/esv/esv20/07-0103-O.pdf http://www-nrd.nhtsa.dot.gov/pdf/esv/esv20/07-0103-O.pdf [2] http://www-nrd.nhtsa.dot.gov/pdf/esv/esv20/07-0450-o.pdf http://www-nrd.nhtsa.dot.gov/pdf/esv/esv20/07-0450-o.pdf [3] http://en.volkswagen.com/en/innovation-and-technology/technical-glossary/umfeldbeobachtungssystem_front_assist.html http://en.volkswagen.com/en/innovation-and-technology/techni... [4] https://techinfo.honda.com/rjanisis/pubs/om/JA0606/JA0606O00325A.pdf https://techinfo.honda.com/rjanisis/pubs/om/JA0606/JA0606O00... [5] http://www.roadandtrack.com/new-cars/news/a6852/subaru-camera-controlled-cruise/ http://www.roadandtrack.com/new-cars/news/a6852/subaru-camer...