The towers will be reduced to a pile of rubble on Sunday during a series of explosions taking just 12 seconds. It will be an awesome spectacle for onlookers but so distracting that airline pilots flying into Leeds Bradford Airport are being warned.
Large crowds are expected to witness it, while more than 140 people will be evacuated from their homes.
Traffic will also be temporarily brought to a halt on the M62, A1 and A162.
The exact time that veteran explosives engineer Dick Green will press the trigger – it is a handheld device these days – will not be disclosed.
However, those living in the 328 yard (300 metre) exclusion zone will be asked to leave their homes from around 9am.