What is the Ideal Catchment Area for TODs?

The half-mile circle has become the standard metric for focusing planning efforts and judging the impacts of transit-oriented development. A new study examines whether the half-mile circle is an effective predictor of TOD success.

"Planners and researchers use transit catchment areas—the land around stations—as geographic units for predicting ridership, assessing the impacts of transit investments and, recently, for designing transit-oriented developments (TODs)," explain Erick Guerra and Robert Cervero. "In the US, a half-mile-radius circle has become the de facto standard for rail-transit catchment areas." 

However, they note, "[t]here is surprisingly little evidence to justify any particular catchment area. Why a half mile? Why not a quarter mile or two-fifths of a mile? Is there anything special about a half mile or is this simply a convenient figure that has become an industry standard?"

In an article published in Access, the magazine of the University of California Transportation Center, the authors report the results of tests "to see whether the half-mile circle explains transit use better than other boundaries do."

Full Story: Is a Half-Mile Circle the Right Standard for TODs?

Comments

Book cover of the Guide to Graduate Planning Programs 4th Edition

Thinking about Grad School?

New! 4th Edition of the Planetizen Guide to Graduate Urban Planning Programs just released.
Starting at $24.95

Prepare for the AICP Exam

Join the thousands of students who have utilized the Planetizen AICP* Exam Preparation Class to prepare for the American Planning Association's AICP* exam.
Starting at $209

City Coasters

Hand-drawn engraved maps of your favorite neighborhoods are divided up across 4 coasters making each one unique.
$36.00
Book cover of Contemporary Debates in Urban Planning

Contemporary Debates in Urban Planning

Featuring thought-provoking commentary and insights from some of the leading thinkers and practitioners in the field.
$18.95