+ - Toyota on board computers, any info?
Submitted
by
stonewolf
stonewolf writes "As the owner of a 2006 Pontiac Vibe (i.e. a Toyota Corolla that I can sit in without hitting my head on the ceiling) who has personally experience uncontrolled acceleration caused by the floor mats fouling the gas pedal I have a personal interest in the safety of these cars. (To be fair, I bought the car used so I do not know if the floor mats are original equipment or not and the 2006 Vibe has not be recalled for anything.)
The geek in me makes me ask the obvious questions about what kind of computers they use and what their development methodology is. I had always assumed (and you know what that means) that drive-by-wire systems would be subject to the same kinds of regulations that apply to aircraft fly-by-wire systems. But, it seems they are not. I have spent time searching for any info, including reading through a number of Toyota's patent filings and I can not find any info that I can use to evaluate the safety of their systems. I started to get really worried when I found a report that said there is only one laptop in the US that can read the "black box" built into Toyota cars. When a company goes to that kind of effort to hide information it is a sign that they *need* to hide the information.
Can anyone tell me anything about the computer systems in these cars? Are they using redundant, i.e. tell me three times, computer systems? If they are redundant, do they use the same processor for all the CPUs? Do they run the same software on all the CPUs? (If you don't understand why I'm asking this go look up "common mode failure". What is their fail over system. What is their software development methodology? What is there verification process. How do they certify their developers? What outside group audits there code and their process? What do they do to ensure against power failure? What kind of EM shielding do they have? What kind of interference ingress filtering do the have on the lines going into and out of the (hopefully) EM shielded computer system?
If I were asking about a 747 I could look all this up. Why is it not a matter of public record for a car? If a 747 crashes a few hundred people are killed. Toyota software affects the safety of millions of people. So far over 10 million cars have been recalled.
So far the popular press has nearly ignored the software part of the problem. I watch CNN way to much... I have seen several interviews with mechanical engineers, include a Ph.D level engineer. I have not seen an interview with a single software developer. Help me find this information for all the people who drive Toyotas every day.
Oh well, even if you can't help me find this info, maybe this posting will be seen by a lawyer who will be able to subpoena the information and make it public in the court record. We can only hope.
You know... your life may depend on this information."
The geek in me makes me ask the obvious questions about what kind of computers they use and what their development methodology is. I had always assumed (and you know what that means) that drive-by-wire systems would be subject to the same kinds of regulations that apply to aircraft fly-by-wire systems. But, it seems they are not. I have spent time searching for any info, including reading through a number of Toyota's patent filings and I can not find any info that I can use to evaluate the safety of their systems. I started to get really worried when I found a report that said there is only one laptop in the US that can read the "black box" built into Toyota cars. When a company goes to that kind of effort to hide information it is a sign that they *need* to hide the information.
Can anyone tell me anything about the computer systems in these cars? Are they using redundant, i.e. tell me three times, computer systems? If they are redundant, do they use the same processor for all the CPUs? Do they run the same software on all the CPUs? (If you don't understand why I'm asking this go look up "common mode failure". What is their fail over system. What is their software development methodology? What is there verification process. How do they certify their developers? What outside group audits there code and their process? What do they do to ensure against power failure? What kind of EM shielding do they have? What kind of interference ingress filtering do the have on the lines going into and out of the (hopefully) EM shielded computer system?
If I were asking about a 747 I could look all this up. Why is it not a matter of public record for a car? If a 747 crashes a few hundred people are killed. Toyota software affects the safety of millions of people. So far over 10 million cars have been recalled.
So far the popular press has nearly ignored the software part of the problem. I watch CNN way to much... I have seen several interviews with mechanical engineers, include a Ph.D level engineer. I have not seen an interview with a single software developer. Help me find this information for all the people who drive Toyotas every day.
Oh well, even if you can't help me find this info, maybe this posting will be seen by a lawyer who will be able to subpoena the information and make it public in the court record. We can only hope.
You know... your life may depend on this information."