TYPE: Rail


TDI have worked on London Underground projects since 1990, first retained by LUL to develop new interiors, cabs and front-end designs for Jubilee, Piccadilly and Northern Line tube stock. TDI manufactured mock-up’s for each of the train interiors, and developed the driver’s desks and Jubilee ‘M’ door detrainment system.

Notably, TDI undertook comprehensive ergonomic studies for all driver and passenger interfaces including integration of the first wheelchair spaces on the Underground and the definition of a universal seat profile to be used across all new stock. This led to TDI’s research and illustrations being used as the foundation for the London Underground ‘Train Interior Guidelines’ first published in 1996.

The team led in diverse projects from seat fabrics (the moquette) to car body fire barriers.


  • 1. TDI has assisted Bombardier with the engineering of various cab and interior systems for the new VLU and SSL stock. This included whole cab mock-ups and simulators
  • 2. TDI also worked on other engineering packages such as de-icing systems for SSL & ELL vehicles manufactured by Bombardier.