Existing ConditionsAcronyms, Abbreviations, and Glossary3.1.1 Rail and Highway System3.1.2. Community Profiles3.1.3 Travel Patterns to Major Destinations3.1.4 Rail, Transit, and Highway System Performance3.1.5 Rail Operational Performance3.1.6 Environmental Resources3.1.7 Weather-Related Hazards & Service Disruptions