Rectangular Rapid Flashing Beacon (RRFB) DEFINITION AND DESCRIPTION Rectangular Rapid Flashing Beacons (RRFBs) are used to provide emphasis to warning signs at marked crosswalks across uncontrolled approaches. RRFBs consist of two rectangular-shaped yellow...
Protected Intersection Image Source: FHWA DEFINITION AND DESCRIPTION Protected intersections use a setback or offset design to minimize conflict points and improve visibility between drivers, pedestrians, and/or bicyclists. Features of protected intersections include...
Positive Offset Turn Lanes Image Source: FHWA DEFINITION AND DESCRIPTION The typical geometry and operation of signalized intersections can present several challenges. Sight distance is important for drivers to identify acceptable gaps in opposing traffic. Opposing...
Median Barriers on Undivided Roadways Image Source: FHWA DEFINITION AND DESCRIPTION Median barriers separate opposing traffic and reduce head-on crashes. In the U.S., median barriers on undivided roadways are uncommon; however, other countries (e.g., Sweden) have used...
Median and Pedestrian Refuge Islands Image Source: Google Earth, Beaumont Centre Circle, Lexington, KY DEFINITION AND DESCRIPTION A median is the area between opposing lanes of traffic, excluding turn lanes. Medians in urban and suburban areas can be created using...
