A video explainer of the notorious traffic law that explains why some cities have to raise speed limits to enforce traffic safety.
To understand the scale of the challenge that must be overcome to achieve Vision Zero safety goals to eliminate traffic fatalities and to break the strangle hold cars have on U.S. cities, look no further than the 85th Percentile Rule, as neatly explained in the Grist video shown above.
For more background, see past Planetizen coverage of the 85th Percentile Rule.
FULL STORY: A 1930s city planning rule has drivers setting their own speed limits
NACTO Recommends Default Safety Setting for Speed Limits
A step toward an overhaul of the way speed is managed on city streets around the country.
After Lowering Speed Limits for Pedestrian Safety, Town Writes 1,000% More Speeding Tickets
Police are enforcing speed limits in the name of public safety in North Haledon, New jersey. Drivers are being urged to respect the speed limit.
How the Law Enshrines Car Dependence
Land use regulations provide exhibit A in this indictment of the American legal system's support for a murderous and destructive dependence on automobiles for transportation.
Trump Administration Could Effectively End Housing Voucher Program
Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.
Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.
Ken Jennings Launches Transit Web Series
The Jeopardy champ wants you to ride public transit.
Making Mobility More Inclusive
A new study highlights the challenges people with disabilities continue to face in navigating urban spaces.
Texas Bills Could Push More People Into Homelessness
A proposal to speed up the eviction process and a bill that would accelerate enforcement of an existing camping ban could make the state’s homelessness crisis worse, advocates say.
USGS Water Science Centers Targeted for Closure
If their work is suspended, states could lose a valuable resource for monitoring, understanding, and managing water resources.
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
Ada County Highway District
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Toledo-Lucas County Plan Commissions
Salt Lake City
NYU Wagner Graduate School of Public Service