Slam-door train

A slam-door train are diesel multiple units (DMUs) or electric multiple units (EMUs) that have doors that can be opened by passengers, these trains were made before automatic door trains were made.

Connex South Eastern Class 423 at Waterloo East in February 2003

They're called slam-door trains because of the noise they made by the passengers slamming the doors shut when the train was about to leave.

Some slam-door trains had doors that could only be opened from the outside, so passengers had to lean out of the window to reach the outside door handle.

In 2005, all slam-door trains were replaced with trains with automatic operated doors.

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  c2c Class 312 at Shoeburyness in March 2003
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  An open passenger door on a British Rail Class 421 train.
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  Open passenger doors on a British Rail Class 421 train.