Well I agree, but there will be only 3 and very few people will ever have to see them.
If you read that page on the Cranfield test facility, the upper deck does not acurately represent the A380 with a sill level of 24 feet. The A380 will have an upper deck sill level of around 40 ft.
And further here is a quote from the page seeking volunteers:
"Please note that for health and safety and insurance reasons, all volunteers for group evacuations must be aged between 20 and 50. In addition, you should be normally fit and healthy, weigh no more than around 15 stones/95.25 kg, and should not be excessively overweight.
Some of our group evacuation trials may be physically demanding, so we would ask you not to volunteer if you have any history of the following:
heart disease, high blood pressure, fainting or blackouts, diabetes, epilepsy or fits, deafness, chronic back pain, ankle swelling, depression, anxiety, other nervous/psychiatric illnesses, fear of enclosed spaces, fear of heights, fear of flying, brittle bones, asthma, bronchitis, breathlessness, chest trouble, allergy, lumbago sciatica, or any other serious illness.
Women who are pregnant, or who think they may be pregnant, should not take part in our trials."
Aren't a few of those people on every flight?
FAR 25 cert requirements require people over 50 to be used as well. Primarily women over 50.
