Tale of two city maps

While wandering around London, where I’m attending CS Forum 11, I’ve got lost a couple times. So I’ve found myself consulting map signs on the sidewalk.

Here are close-ups of two that I used. They are very similar, but one was instantly more helpful than the other. Can you guess which one and why?

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For me the second one is the winner, thanks to the line directly perpendicular to the “you are here” arrow.

That little line represents the street sign I was looking at, so I instantly knew which way I was facing. That information combined with my knowledge of where I wanted to go helped me get there faster.

Good navigation not only tells you where you are, but also give you orientation — it accounts for your context.

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