The end of the line for old-fashioned carriages
The fleet of 250 new trains will be "rolled out" in the mid-2020s, and are anticipated to remain in service for 40 years.
A new design was necessary to cope with the increasing demand. Transport for London (TfL) expects London's population to rise from its current level, about 8.4 million, to approximately 10 million by 2030.
The new "walk-through" design will provide up to 60% greater capacity in comparison to the existing trains, allowing lines like the Bakerloo and Central to carry between 8,000 and 12,000 passengers every hour.
"The principal challenge was that the deep tube tunnels are very narrow, so the train themselves are confined to really small spaces," says Priestman.
"We also had to address making the components lightweight and creating enough space for air cooling systems."
The end of the line for old-fashioned carriages
The fleet of 250 new trains will be "rolled out" in the mid-2020s, and are anticipated to remain in service for 40 years.
A new design was necessary to cope with the increasing demand. Transport for London (TfL) expects London's population to rise from its current level, about 8.4 million, to approximately 10 million by 2030.
The new "walk-through" design will provide up to 60% greater capacity in comparison to the existing trains, allowing lines like the Bakerloo and Central to carry between 8,000 and 12,000 passengers every hour.
"The principal challenge was that the deep tube tunnels are very narrow, so the train themselves are confined to really small spaces," says Priestman.
"We also had to address making the components lightweight and creating enough space for air cooling systems."
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