The Jingjintang Expressway in northeastern China is an example of this phenomenon. Its shoulder is only wide, which is not wide enough for some automobiles—a standard lane in the U.S. and UK is . As a result, some motorists are unable to fully exit the mainline when they need to pull over, so they end up in a position that is halfway in the rightmost lane and only partly on the shoulder. The end result is often a traffic jam and occasionally a collision.