3 ms·
They've largely had something like this already in most cars, a low speed bus that's got the non-critical things (seat position controls, window controls, etc.)
by simcop2387 11y ago
They've largely had something like this already in most cars, a low speed bus that's got the non-critical things (seat position controls, window controls, etc.) and a high speed one that has all the things like engine data, speedometer updates, etc.
I definitely agree though they need to take this to the level that's usually seen in avionics with a read only gap between the third entertainment system bus. Without that you really can't hope to secure it. The only real problem I can see is how would you let the roadside assistance stuff unlock the doors? Maybe an authenticated write only to the low speed bus that you don't get to control the message, just "unlock all doors".
- paulmd 11y agoThere are very few "non-critical" systems in a 2+ ton vehicle moving at highway-to-expressway speeds. For an example of what a "minor" system like seat position can do, consider the following: http://www.lakecountrynow.com/opinion/blogs/communityblogs/130253333.html http://www.lakecountrynow.com/opinion/blogs/communityblogs/1... After more investigation they ended up suspecting a different failure mode, but it speaks to the danger of even pedestrian functionality. Most people are shit drivers who are unsafe to be around in the best of times, "minor" things like stereo control, windshield washing, etc are certainly enough to distract them let alone being physically moved out of the reach of the controls. Particularly in combination, let alone in rush hour traffic or bad weather.
- mratzloff 11y agoIf an individual does something stupid and gets himself killed, that's one thing. If I can send a broadcast message to cut the brakes, and that can potentially affect many vehicles at once, that's something else entirely and the greater risk to public safety.