Many courses use colors to indicate the positions of the holes, so as to avoid the second small flag mentioned above. The colors of flags may vary according to the different courses. In the United States, the red flag indicates that the hole is near front, the white flag the middle, and the blue flag the back, which is similar to the color system of T stage.
Blue flags on carts
Generally, the cart is not allowed to get too close to putting green, so as to prevent damages to the turf. The cart should stop 50 meters away from the putting green. However, disable players can approach, and they usually have a blue flag hung on their car to show their special situation.