Show speed limit ahead (e.g. 300 meters ahead) for economic driving
In order to allow economic driving one should be informed that a changing speed limit will come up long enough to be able to save fuel and save the environment. When there is a hint that you have to lower speed like 300 meters in advance you can just stop pushing gas, so car will just sail.
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Anonymous
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Peter
commented
Was searching for this, I would love to see the point of speed change on map (on the road) ahead of you. There are many villages just around the corner and you have to brake hard to not overspeed.