Tuesday, April 7, 2015 [Tweets] [Favorites]

Car UI

Dr. Drang:

When the wiper is in intermittent mode, it moves at the same speed as it does in low-speed mode. The difference is that it pauses between wipes. How long it pauses is what’s controlled by the collar position. To me, twisting the collar to move the marker down should make the pause between wipes shorter. This would be consistent with the way the stalk itself is moved: down to handle heavier rain. This is also consistent with the quasi-bar chart graphic, which I interpret as a graph of the pause, or interval, between wipes.

You will not be surprised to learn that the collar works exactly the opposite of how I think it should work. The interval between wipes increases as you turn the collar to move the marker down; the bottom position is for the lightest sprinkle. For the stalk, down equals heavier rain; but for the collar, down equals lighter rain.

The chart is apparently meant to represent the frequency of wiping, not the interval between wipes, despite the INT label on the marker. Yes, I know they mean INT to be interpreted as intermittent, not interval, but intermittent is not a quantity that can be graphed. Interval is. Which is why every time I look at that control, my mind says interval and I want to twist it the wrong way.

This has always bothered me with my Toyota.

1 Comment

Heh. I simply never get my Toyota's controls right the first time, but never thought to wonder why not.

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