Drones are vehicles that don't carry passengers... so they all use the same rules.
Their use cases are completely different for travel vs tactical. It would make more sense to treat them differently mechanically.
It's not that the rules don't cover it, because they do. It's that when you slow it down to the character level it just isn't worth doing the math 98% percent of the time.
So put that statement in the book. Any book. Instruct people. In a rulebook.
For example a Steel Lynx at its lowest Speed Interval has a movement rate of 15 meters per turn putting at 50% faster than the metatypes. So why worry about doing any math beyond that unless it needs to engage something faster?
Because the rule book doesn't say that's how Accel or Speed Intervals work. It only provides one use case and no exceptions. I'm not sure how else I can say that what's in your head is not in the rulebook and makes people have to stop and scratch their heads and fake it instead of following what could be a two sentence rule.
That's a pretty unfortunate state of affairs for what (in my experience) is a pretty quintessential function of being a rigger.
Sorry, I don't think we agree that there's a problem here, and I'm not sure what we're going to accomplish carrying on further. Happy to talk more, but I can't think of how else to state it, not any benefit to continuing to try. Your solution is fine "Use Accel as the walk rate". Simple, easy. Not disputing that. Just asking for it to be published somewhere so people can use it.