That's the whole point of the patents owned by the body - to ensure that implementations follow the guidelines of the standards body (particularly about compatibility.)
Bull. That was NEVER the point to patenting any parts of a standard. I don't know of any standards that are NOT being broken because of the threat of a patent lawsuit. I can't think of a single one. The point to adhering to a standard is so you have a checkbox on your datasheet. If it doesn't adhere, your customers complain, and they go to a different vendor.
You claim this is your field, but your assertion truly baffles (and enrages) me, unless you are trying to spin patents as "good" to people who watch patent games ruin standards efforts daily.
Further, the Toyota ETC lacks an important safety mechanism: if the customer presses both the throttle pedal and the brake pedal, then the ETC should give priority to the brake. The Toyota ETC gives priority to the throttle. How can Toyota engineers commit such a gross design mistake? Common sense tells us that the brake should receive priority.
When tuning my own ECU, this is the first thing I disabled. It makes left foot braking impossible. Bottom line, we need better drivers, not cars for idiots.
If you can't do html/css or xml/docbook, then you are an incompetent technical writer.
Q: How many IBM CPU's does it take to execute a job? A: Four; three to hold it down, and one to rip its head off.