Transportation/Infrastructure

From Employment Centers to Mixed-Use Activity Centers: Community and Environmental Impacts

Some U.S. edge cities are experiencing a second generation of development – a makeover of strategic infill, land-use diversification and often transit-orientation and pedestrian-friendly streetscape design. This research will use 1990 and 2000 census data to create a typology of Employment Centers (ECs) in the San Francisco Bay Area, focusing on changes in development scale, densities, land-use mixes, employment compositions, and site-design elements during the 1990s. EC prototypes, such as “second-generation mixed-use edge cities” and “single-use office parks”, will be identified using cluster analysis techniques. Changes in commuting choice and behavior during the 1990s will be measured for each EC prototype, using metrics related to modal splits, commute distances and durations, and VMT/employees as well as estimated fuel consumption, mobile-source emissions, and greenhouse gas emissions. Case-study work will probe the influences of market forces (e.g., housing targeted at professional workers) and planning interventions (e.g., rezoning, infrastructure provisions) in explaining why and how different ECs underwent different land-use and employment transformations during the 1990s. The research will shed important light on the broader transportation and environmental policy implications of land-use transformations among traditional employment centers in U.S. metropolitan areas.

Principal Investigator:
Robert Cervero

Contact Information:
Tel: 510.642.1695
Fax: 510.642.1641
Email: robertc@berkeley.edu

Funding Information:
University of California Transportation Center
 

Start Date: 9/1/08

Effects of Transportation Corridor Features on Driver and Pedestrian Behavior and on Community Vitality

Communities across California "expect and demand more context sensitive transportation systems. However, without defensible measures of the effects of corridor design features, Caltrans will miss opportunities to be responsive to their partners".

The purpose of this study is to identify quantifiable performance measures for transportation corridor design features related to safety, economic vitality and community quality of life. The results of this study will support Caltrans planning, design, and implementation of transportation corridors responsive to the contextual environments of Caltrans partner communities and will provide a model for transportation and urban planners and designers.

A key aspect of the study will be to identify a corridor on which we will conduct research that collects data on performance measures identified in previous research. Initial roadway types for study are arterials and "main street" highways, with a focus on roadways that are within Caltrans' jurisdiction. The study will investigate how individual design features and the shaping of whole environments can influence and result in specific behaviors and benefits.

Principal Investigator:
Elizabeth Macdonald, Ph.D.

Contact Information:
Tel. 510.643.3765
Email: emacdon@berkeley.edu

Funding Information:
Caltrans

Start Date: 9/1/07

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