Uncontrolled IntersectionĪn uncontrolled intersection is one in which the entrance into the intersection from any of the approaches is not controlled by a regulatory (i.e., STOP or YIELD) sign or a traffic signal. In essence, any and every unsignalized intersection can be classified as being one of the following: (1) uncontrolled, (2) YIELD sign-controlled, or (3) STOP sign-controlled. Intersection traffic control type refers to the most restrictive level of control employed at the intersection, with yield control being more restrictive than no control, and stop control being more restrictive than yield control. Also discussed briefly at the end of this section is an emerging typology applicable to unsignalized intersections-traditional versus nontraditional geometric designs. Because intersection traffic control type defines the scope of the UIIG, it also serves as the basis of the Guide’s classification of unsignalized intersections. 1 Unsignalized intersections can be categorized in a variety of ways, such as by type of traffic control, area type (i.e., urban, suburban, rural), and number of approach legs.
The focus of the Unsignalized Intersection Improvement Guide (UIIG) is the unsignalized intersection, which is defined as any at-grade junction of two or more public roads at which the right-of-way for motorists, bicyclists, and pedestrians is not controlled by a highway traffic signal.
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