Maryland Arterial Intersection
DesignThe Superstreet design is
similar to the Median U-turn Crossover concept but features a break in
cross-street traffic that allows the signals on opposite directions of the
arterial to operate independently.
Maryland Arterial
Intersection DesignFHWA
Signalized Intersections GuideThis
report complements the American Association of State Highway and Transportation
Officials' (AASHTO) Strategic Highway Safety Plan to develop guidance on safety
of nonsignalized and signalized intersections. The goal is to reduce the annual
number of highway deaths. This guide a comprehensive document that contains
methods for evaluating the safety and operations of signalized intersections and
tools to remedy deficiencies.
FHWA
Signalized Intersections GuideNorth Carolina Project Superstreet
AlternativeCurrently, there are large
amounts of traffic on U.S. 15/501 passing through the intersection of Erwin
Road/Europa Drive. The combined factors of heavy traffic flow on U.S. 15/501 and
the current traffic flow to/from businesses in the area have raised concerns for
motorists and pedestrian safety. The constant congestion results in multiple
back-ups and long delays in traffic movement; moreover, constant idling results
in higher vehicle emissions.
North Carolina Project
Superstreet AlternativeIowa
State PresentationThe J-Turn
intersection utilizes a directional median opening which closes the median to
minor road traffic, but still allows all maneuvers (including left-turns) from
the expressway.
J-Turn 101.pdf
Median
Intersection Design for Rural High-Speed Divided
HighwaysThe purpose of this study was to explore common safety
issues, discuss alternative safety improvements at rural intersections and to
report experiential data collected from agencies who have tried alternative
methods. The report contains 10 case studies showing how different alternatives
have been used in the field.
Median
Intersection Design for Rural High-Speed Divided Highways 