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From page 1...
... INTRODUCTION The operational world of public transportation is complex and multifaceted. Public transportation systems in the United States include automated guideway, rail, bus, ferry and paratransit modes.
From page 2...
... Public transportation systems are vulnerable to attack or intentional disruption for a number of reasons1. Characteristics contributing to the vulnerability of public transport include: ❐ carrying a large number of people within enclosed spaces; ❐ following known or fixed routes during a predictable timeframe; ❐ having fixed access points; ❐ containing unique hazards (e.g., traction power, confined spaces, etc.)

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