With many New York City elected officials expressing concern that Mayor Bloomberg’s congestion pricing study will create numerous problems in the neighborhoods just outside the charging zone, now is a good time to take a look at the extensive "Boundary Impacts Study" undertaken by Transport for London in its Fourth Annual Monitoring Report

The London study found no evidence of "boundary-related problems" due to congestion charging. Rather, the neighborhoods just outside of London’s charging zone experienced small reductions in traffic, improvements in air quality, reductions in traffic accidents, and a steady growth in sales for the many small businesses in the study area. The study concludes, "there continues to be no evidence of adverse traffic impacts on roads surrounding the charging zone."

You can download a summary of TfL’s Fourth Annual Monitoring report here or download the full report and turn to page 126 for details on the Boundary Impacts case study. Here are the study’s conclusions: