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Old 05.09.2017, 16:39
Urs Max Urs Max is offline
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Re: The Brexit referendum thread: potential consequences for GB, EU and the Brits in

The problem with the test is, it must be repeatable and each run must be identical. Thus it can't involve humans behind the steering wheel, for instance, or go on an actual tour.

Using non-identical conditions (for instance by using averags of actual tours with a person behind the wheel) opens up the whole thing to even more manipulation.

That may be resolvable soon-ish with self-driving cars but even then you may be able to design your software to recognise the situation. For instance a machine may keep the gas pedal much more steadily than a human driver. So once the software recognises that, it may again switch to "test mode".

Somewhat random pedal movements by the automaton OTOH would render the conditions non-identical thus test non-repeatable.

Relying on real-world consumption (which is just a guess to begin with) doesn't work either as car companbies can always claim John Doe doesn't know how to properly drive, or Jane Q always has the air condition on so they use way more than actually necessary.

Relying on onboard data (every reasonably modern engine registers how much fuel it burned, the mileage it clocked, etc) is even trickier because you rely even more on the car industry.

As ever so often the devil's in the detail.
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