Colorado Barrier

Row of concrete Jersey barriers running down the middle of a multi-lane road.

‘Colorado Barrier’ Repurposes Old Tires for Road Safety

The recycled rubber barrier can protect pedestrians and people in cars on lower-speed streets.

March 12, 2025 - Equipment World

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Top Books

An annual review of books related to planning.

Top Schools

The definitive ranking of graduate planning programs.

100 Most Influential Urbanists

The who's who of urbanism, according to Planetizen readers.

Urban Planning Creators You Should Know

A short list of voices on social, video, and podcasting platforms.