Randal O'Toole points to a thesis paper that proposes a new approach to traffic flow at major intersections.
Rebecca Lynn Haley, author of the study, defines the concept:
"Superstreets, also known as the restricted crossing u-turn (RCUT) by the Federal Highway Administration (FHWA), works by redirecting the side street left turn and through movements to a downstream, one-way median opening. Left turns from the major road can be accommodated by a u-turn maneuver after the intersection or by a left turn crossover at the main intersection."
Randal O'Toole concludes, from reading the report, that "...this greatly reduces both the time required for traffic signals to cycle and the number of conflict points between the two streets."
Diagrams of the traffic flow are available at The Antiplanner.
FULL STORY: Superstreets Relieve Congestion
On the Benefits of Traffic Signal Removal
Certain intersections stand to gain from losing their traffic lights. According to this study, cities can save money and improve safety by uninstalling signals in low-traffic zones.
How Understanding Near-Misses Can Improve Road Safety
Most road safety efforts are based on data about crashes that have already occurred. But important information can be gleaned from incidents when something almost went wrong, but didn’t.
Las Vegas Uses ‘Mini-Roundabout’ for Traffic Calming
Roundabouts, commonly used in other countries, are starting to catch on in U.S. cities. They can improve traffic flow and bring efficiency benefits.
Maui's Vacation Rental Debate Turns Ugly
Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.
Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.
San Francisco Suspends Traffic Calming Amidst Record Deaths
Citing “a challenging fiscal landscape,” the city will cease the program on the heels of 42 traffic deaths, including 24 pedestrians.
Defunct Pittsburgh Power Plant to Become Residential Tower
A decommissioned steam heat plant will be redeveloped into almost 100 affordable housing units.
Trump Prompts Restructuring of Transportation Research Board in “Unprecedented Overreach”
The TRB has eliminated more than half of its committees including those focused on climate, equity, and cities.
Amtrak Rolls Out New Orleans to Alabama “Mardi Gras” Train
The new service will operate morning and evening departures between Mobile and New Orleans.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
Heyer Gruel & Associates PA
JM Goldson LLC
Custer County Colorado
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
Jefferson Parish Government
Camden Redevelopment Agency
City of Claremont