Road lines & asphalt

Road markings are a quiet but powerful clue. Whether the centre line is yellow or white, the presence of edge lines, and the asphalt's colour eliminate broad regions. A yellow centre line is common in North America and a few regions, while white is standard across most of Europe. Combine it with soil and asphalt colour.

• ✓Centre line: yellow or white?
• ✓Edge lines present? Dashed or solid?
• ✓Asphalt colour and texture back up the region
• ✓Road width and shoulder type add detail