Japan's 'Roller Coaster' Bridge: The Truth Behind the Optical Illusion

• Eshima Ohashi Bridge in Japan appears dangerously steep in viral images, often called a 'roller coaster' road.
• The extreme incline is an optical illusion, 'perspective compression,' often enhanced by telephoto lenses.
• Daihatsu Motor Co. famously used this illusion in an ad to highlight car engine power.
• Actual inclines are mild (6.1% and 5.1%), easily navigable by standard vehicles.
• Built high for ship passage, it's Japan's largest rigid frame bridge and a major tourist draw.

Why It Matters: Viral 'dangerous' bridge is an optical illusion; reality is a normal, well-engineered structure.