Problem | Hong Kong (Q) | Tokyo (Q) | Seoul (Q) | Istanbul (Q) | London (Q) | New York (Q) | Lagos (Q) |
Informal settlements (land tenure, development approvals, building control) | N | Y | N | Y | N | N | Y/High |
Traffic management and control | Y/Medium | Y | Y | Y | Y | Y | Y/High |
Natural hazards (floods, earthquakes, fires) | N | Y | Y | Y | Y | Y | Y/High |
Unclear responsibilities and mandates (within or between administrators) | N | N | N | N | N | N | Y/High |
Uncoordinated planning | N | N | - | N | N | N | Y/High |
Water management issues (both fresh water supply and waste water disposal) | Y/Medium | Y | N | Y | N | N | Y/High |
Provision of continuous electricity | N | Y | N | N | N | N | Y/High |
Visual pollution and refuse disposal | Y/Medium | Y | N | N | N | Y | Y/High |
Air and water pollution control | Y/Medium | Y | Y | N | Y | Y | Y/High |
Population growth | - | Y | - | Y | Y | Y/Low | Y |