Related Clues:

• Driving danger
• Cause of many an accident
• Haze
• London weather, often
• Visibility problem
• Suffer in the sun
• Navigation hindrance
• Naviga-tion hindrance
• Grill
• Confused state
• See 38-Down
• London forecast
• State of confusion
• Sear, as a steak
• Weather London is famous for