What is hair pin corner?

Hairpin corner is a type of turn that has a sharp 180-degree bend with a major change in direction. It is usually found in racing circuits or mountain roads with narrow track or route. The term hairpin corner comes from the resemblance to the shape of a large pin or hairpin. This type of corner requires a lot of skill and precision from the driver to negotiate through it, as it involves a sudden change in direction and a significant reduction in speed. The radius of hairpin corners is usually small, requiring the driver to brake hard to reduce their speed before entering the turn, and then accelerate carefully to exit the turn successfully. In racing circuits, hairpin corners are often used strategically to force other drivers to slow down and create opportunities for overtaking.