Unsignalized Intersection Improvement Guide: Types of Problems

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April 17th, 2018

There are many problems that can occur at an unsignalized intersection. Problems could be specific to an individual intersection, occur along a section of road with successive unsignalized intersections, or be a systemic problem throughout a jurisdiction. The following represent common problems experienced at unsignalized intersections that are addressed in the Unsignalized Intersection Improvement Guide (UIIG):

Inappropriate intersection traffic control
Inadequate visibility of the intersection or regulatory traffic control devices
Inadequate intersection sight distance
Inadequate guidance for motorists
Excessive intersection conflicts within or near the intersection
Vehicle conflicts with non-motorists
Poor operational performance
Misjudgment of gaps in traffic
Speeding
Non-compliance with intersection traffic control devices