> "These newer units are safer as the doors have central locking ... In the past, the doors on slam-door trains could be opened at any time, even while the train was moving."
> "Due to a number of high-profile accidents in the 1990s, the manually-locked slam doors were supplemented with electronic, driver- or guard-operated central locking before they were gradually phased out in favour of sliding doors through the 2000s, resulting in a sharp decline in the number of deaths per year from passengers falling from trains"
> "Some units had individual compartments, each with its own door and no access to any other part of the train; however, these were unpopular due to security concerns and the lack of access to toilets ... The phase out was speeded up after the Murder of Deborah Linsley in such an individual compartment in 1988."
The Asbestos in many of these slam-door trains is less relevant to the central point, but was also a factor in the transition.
> "Due to a number of high-profile accidents in the 1990s, the manually-locked slam doors were supplemented with electronic, driver- or guard-operated central locking before they were gradually phased out in favour of sliding doors through the 2000s, resulting in a sharp decline in the number of deaths per year from passengers falling from trains"
> "Some units had individual compartments, each with its own door and no access to any other part of the train; however, these were unpopular due to security concerns and the lack of access to toilets ... The phase out was speeded up after the Murder of Deborah Linsley in such an individual compartment in 1988."
The Asbestos in many of these slam-door trains is less relevant to the central point, but was also a factor in the transition.