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For this exploratory study, focus groups were convened in Northern Virginia and Philadelphia among the general public, business owners and managers, and owners and managers of shipping and transportation logistics firms. The purpose of these focus groups was to obtain feedback on a specific congestion pricing scenario and to better understand the public's concerns regarding congestion pricing. A secondary purpose was to learn more about how to communicate with the public on the topic of congestion pricing.

Runway incursions are defined as the unauthorized presence of a vehicle, pedestrian, or aircraft on a runway. Identifying situations or conditions in which runway incursions are more likely to be severe can suggest policy implications and areas for future safety research. Previous work in this area focused on a narrative approach. This study seeks to examine runway incursions from a statistical perspective and provide insights into the broad trends underlying severity. This report analyzes 10 years of runway incursion event information. A variety of FAA data sources were used to provide...