A three-way junction (or three-way intersection) is a three-arm road intersection. A Y junction (or Y intersection) typically has three equal-sized arms. A T junction (or T intersection) has three arms as well, although one of them is usually a small road linking to a bigger road. Intersections that do not have any of these names are called generic terms. These terms can be used regardless of the number of roads involved. Three-way junctions and Y jcts are commonly found in suburbs and on rural roads. T-junctions are more common in cities with wide streets and many one-way routes. Although four-way stops are becoming more common on suburban streets, three-way stops are still seen occasionally. Intersection names are used by police officers when writing up traffic tickets. They try to identify which road the driver took so they can bill the correct insurance company. If you've been given a ticket at an intersection with no name, don't worry about it. The officer should know which way you went based on which streets were blocked by accident victims or police cars. In mathematics, an n-way junction is a location at which any number ≤ n of distinct paths may meet. Thus, an 2-way junction is a location where two paths may meet, such as an intersection; a 3-way junction is a location where three paths may meet, such as a T-junction; and so on.