Comparison of before and after counts of vehicular volume-to-capacity ratio shows replacing car lanes with bike lanes may not adversely impact vehicle traffic when bike lanes are constructed on less congested streets.
Gretchen Johnson and Aaron Johnson seek to answer how new bike lanes impact drivers, especially when they take the place of an existing vehicle lane: “It seems that unless a ton of people start commuting by bicycle, giving away a lane would cause increased car traffic. But is this really the case?”
By comparing vehicular volume-to-capacity (V/C) ratio before and after bike lanes have been added, Johnson and Johnson reveal that: “Taking away a lane does significantly increase the estimated V/C ratio during rush hour...But it’s not at a high enough V/C ratio where traffic will get really congested and start slowing down.”
Their recommendations regarding where to place new bike lanes: “Bike lanes don’t cause a lot more congestion if you put them on the right streets…if you start with roads that are well under capacity, you’ll only increase the congestion a little bit. And it may not even be noticeable.”
FULL STORY: Bike Lanes Don’t Cause Traffic Jams If You’re Smart About Where You Build Them
With Protected Lanes, 460% More People Commute by Bike
For those needing more ammo, more data proving what we already knew is here.
DC Backpedals on Bike Lane Protection, Swaps Barriers for Paint
Citing aesthetic concerns, the city is removing the concrete barriers and flexposts that once separated Arizona Avenue cyclists from motor vehicles.
Philadelphia Swaps Car Lanes for Bikeways in Unanimous Vote
The project will transform one of the handful of streets responsible for 80% of the city’s major crashes.
Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.
San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning
SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.
The Tiny, Adorable $7,000 Car Turning Japan Onto EVs
The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.
Trump Approves Futuristic Automated Texas-Mexico Cargo Corridor
The project could remove tens of thousands of commercial trucks from roadways.
Austin's First Single Stair Apartment Building is Officially Underway
Eliminating the requirement for two staircases in multi-story residential buildings lets developers use smaller lots and more flexible designs to create denser housing.
Atlanta Bus System Redesign Will Nearly Triple Access
MARTA's Next Gen Bus Network will retool over 100 bus routes, expand frequent service.
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.
Smith Gee Studio
City of Charlotte
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
US High Speed Rail Association
City of Camden Redevelopment Agency
Municipality of Princeton (NJ)