Highway Capacity: A Public Safety Issue?

In a post-9/11 and post-Katrina world, where mass evacuations mean an exodus in private vehicles, does a lack of appropriate freeway capacity represent a public safety hazard, asks Wendell Cox.

1 minute read

September 28, 2005, 7:00 AM PDT

By Chris Steins @planetizen


"An estimated 2.5 million people were able to evacuate from Houston because they had cars and because the roadway system has been upgraded to handle the rising population, writes Wendell Cox.

For nearly two decades, urban planners and environment interest groups have sought by every means possible to prevent the building of new highway capacity. The justification was a belief that building new highways created more traffic, which is akin to believing that building more maternity wards would increase the birthrate.

In most urban areas, traffic congestion has become much worse because road capacity has not kept up with growth. This means more than just a longer trip to work: It means that it will take more time than we have to complete major evacuations if they should be necessary."

Tuesday, September 27, 2005 in National Review

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 30, 2025 - Diana Ionescu

Close-up on Canadian flag with Canada Parliament building blurred in background.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?

As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

April 28, 2025 - Benjamin Schneider

Hot air balloons rise over Downtown Boise with the State Capitol building visible amidst the high rises.

The Five Most-Changed American Cities

A ranking of population change, home values, and jobs highlights the nation’s most dynamic and most stagnant regions.

April 23, 2025 - GoodMigrations

A large Google data center building in the Netherlands.

Rethinking Computing: Researchers Tackle AI’s Energy Demands

USC researchers are reimagining how AI systems are trained and powered — through smarter algorithms, innovative hardware, and brain-inspired designs — to dramatically reduce computing’s energy footprint.

30 minutes ago - USC News

Close-up of smartphone with Zoox logo and screen with blurred image of Zoox autonomous vehicle in background.

Amazon-Owned Robotaxis to Begin Testing in LA

Los Angeles will become the sixth city where Zoox is testing its autonomous vehicle technology.

2 hours ago - Smart Cities Dive

NYC MTA train on elevated rail with Manhattan skyline visible in background.

New York MTA Says No More Borrowing, Will Cut Costs Instead

The agency says it won’t take out any new loans to finance its planned improvements and is finding other ways to cut costs.

4 hours ago - Bloomberg CityLab

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.

Senior Manager Operations, Urban Planning

New York City School Construction Authority

Building Inspector

Village of Glen Ellyn

Manager of Model Development

Central Transportation Planning Staff/Boston Region MPO