2 carriages...1 for the Queen, and 1 for the Crown Jewels...

For the dramatic ritual that opens Parliament, the queen's coachmen don full livery, and two of her horse-drawn carriages parade through the streets. Tonight's episode of MONARCHY: THE ROYAL FAMILY AT WORK leads viewers through the elaborate state opening of Parliament...from the secret removal of the crown jewels from their Tower of London vault, to the moment when the House of Commons slams the door in the face of the queen's representative, to the eventual conclusion when the rowdy Commons stand before their queen..."HEADS OF STATE"...9pm