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OpenStreetMap by Jonathan Bennett

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Collecting information without a GPS

It's still possible to gather data for OpenStreetMap without a GPS receiver. Roads near your area may have been mapped by someone passing through the area, so will be missing any detailed information and points of interest. There are also areas where mappers have traced aerial images or out-of-copyright maps without surveying the area in person, so these areas will need details to be filled in.

You can identify areas that have been traced purely from aerial images using the NoName layer in the slippy map. This highlights any residential roads without a name, so any large blocks where all streets are highlighted are likely to have come from aerial images.

To go mapping without a GPS, you'll need a hard copy of ...

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