The ODbL does indeed require that, if you add to OpenStreetMap data, you have to make that data freely available under the same terms - that's the quid pro quo for getting access to such a huge amount of geodata. It's what's known as a "share-alike" licence. I'm afraid that 'free-to-view' generally doesn't have any special bearing under open source licences - you'll often hear people make this point with the phrase "free as in speech, not free as in beer". If you want to build on a UK map database but not share the results, you'd be better off looking at the Ordnance Survey OpenData datasets. These have no "share-alike" requirement, so you can do whatever you want as long as you retain a credit to the Ordnance Survey. Their main datasets are Meridian2 (low-resolution street data, probably the best for your purposes); VectorMap District (may be relevant relevant, but unroutable, partly only partially attributed, and possibly too high-resolution); and StreetView (a raster product so less relevant).

The ODbL does indeed require that, if you add to OpenStreetMap data, you have to make that data freely available under the same terms - that's the quid pro quo for getting access to such a huge amount of geodata. It's what's known as a "share-alike" licence. I'm afraid that 'free-to-view' generally doesn't have any special bearing under open source licences - you'll often hear people make this point with the phrase "free as in speech, not free as in beer". If you want to enhance build on a UK map database but not share the results, you'd be better off looking at the Ordnance Survey OpenData datasets. These have no "share-alike" requirement, so you can do whatever you want as long as you retain a credit to the Ordnance Survey. Their main datasets are Meridian2 (low-resolution street data, probably the best for your purposes); VectorMap District (may be relevant but unroutable, partly attributed, and possibly too high-resolution); and StreetView (a raster product so less relevant).

The ODbL does indeed require that, if you add to OpenStreetMap data, you have to make that data freely available under the same terms - that's the quid pro quo for getting access to such a huge amount of geodata. It's what's known as a "share-alike" licence. I'm afraid that 'free-to-view' generally doesn't have any special bearing under open source licences. licences - you'll often hear people make this point with the phrase "free as in speech, not free as in beer". If you want to enhance a UK map database but not share the results, you'd be better off looking at the Ordnance Survey OpenData datasets. These have no "share-alike" requirement, so you can do whatever you want as long as you retain a credit to the Ordnance Survey. Their main datasets are Meridian2 (low-resolution street data, probably the best for your purposes); VectorMap District (may be relevant but unroutable, partly attributed, and possibly too high-resolution); and StreetView (a raster product so less relevant).

The ODbL does indeed require that, if you add to OpenStreetMap data, you have to make that data freely available under the same terms - that's the quid pro quo for getting access to such a huge amount of geodata. It's what's known as a "share-alike" licence. I'm afraid that 'free-to-view' generally doesn't have any bearing under open source licences. If you want to enhance a UK map database but not share the results, you'd be better off looking at the Ordnance Survey OpenData datasets. These have no "share-alike" requirement, so you can do whatever you want as long as you retain a credit to the Ordnance Survey. Their main datasets are Meridian2 (low-resolution street data, probably the best for your purposes); VectorMap District (may be relevant but unroutable, partly attributed, and possibly too high-resolution); and StreetView (a raster product so less relevant).