Simplify the following text for a Grade 5 native English-speaking person.
Original: With the demise of Acton Works this requirement no longer exists and the new 2009 tube stock has a wider profile and slightly longer carriages which preclude it running on other deep-level tube lines .
Simplified: The new 2009 tube stock has a wider profile and slightly longer carriage . This prevents it from running on other deep-level tube lines .