US SB3665

Creates a new federal crime for assaulting or intimidating passenger train crew members while onboard an operating train, on a platform, or in a rail station

Covers engineers, conductors, onboard personnel, safety-sensitive function employees, and station customer service workers at intercity and commuter rail operations

Establishes penalties of up to 8 years imprisonment and/or fines for violations, increasing to up to 20 years if a dangerous weapon is used

Defines "dangerous weapon" broadly to include any device capable of causing death or serious bodily injury, specifically including pocket knives with blades under 2½ inches and box cutters

Criminalizes attempts and conspiracies to commit assault or intimidation that interferes with crew members' duties