Curb

A curb (also spelled "kerb" in British English) is a raised, colored border that runs along the edges of a race track, particularly around corners and tight sections called chicanes.

These track features are typically painted in bright, alternating colors like red and white stripes to make them highly visible to drivers speeding around the circuit. Think of them as similar to the curbs you see on city streets, but designed specifically for racing purposes.

The main job of a curb is to keep drivers honest by preventing them from cutting corners or straying too far from the proper racing line. Without curbs, drivers might take shortcuts through corners or run too wide, which could be dangerous or unfair to other competitors.

However, curbs aren't just barriers – they're also tools that skilled drivers can use to their advantage. By carefully "riding the curbs," drivers can sometimes take a tighter line through a corner while maintaining higher speeds. This technique allows them to cover less distance and potentially gain time over their competitors.

Not all curbs are created equal. Some are relatively flat and smooth, making them easier for drivers to use strategically. Others are more aggressive, with raised or serrated surfaces that discourage drivers from using them too much. The most intimidating are "sausage curbs" – large, rounded bumps that can seriously damage a car if hit too hard.

Using curbs comes with risks. While they can provide a speed advantage, they can also unsettle a car's handling due to their uneven surface. Aggressive curb usage can damage suspension components or throw off a car's balance, potentially causing the driver to lose control.

Race officials closely monitor curb usage, as repeatedly exceeding track limits by overusing curbs can result in penalties or lap time deletions.