What types of accidents can occur on subways, streetcars and light rail transit?

People may fall or be pushed onto subway tracks, be hit by vehicles when entering or exiting a streetcar or street-level LRT vehicle, be injured if doors close too quickly on a rider, slip and fall on the vehicle itself or platform/transit shelters, fall or suffer trauma when bracing themselves during a sudden stop, injured themselves due to hazards on poorly maintained vehicles or platforms, through physical altercations between passengers, or through collisions with other vehicles or stationary objects.