Several important points. (Disclaimer - I am disabled to where I need an
ECV when in the parks or in a large shopping mall, but in my normal day to day activities I do not need one. Although I can stand and walk short distances with no problem, if I try walking over 200 yards I have severe pain in my lower joints.)
1. The manufacturer of the Segways has taken no action to have the Segway certified as a medical device. Therefore, no matter what the use they legally are not medical devices.
2. The Americans With Disabilities Act (ADA) does not allow a company to ask for proof of a disability to give the people equal access. Note that if they give higher access, such as something free which others would have to pay for, they are allowed to ask for proof of a disability.
3. Disney considers allowing use of a wheelchair (pushed or power) or an Electric Convenience Vehicle (ECV) which are certified as medical equipment to be used in the park without limit.
4. Disney will rent out equipment, such as wheelchairs and
ECVs, which will allow equal use of the parks for people who state they are disabled, even if the disability is temporary. There is nothing to stop any person who has no disability from using a wheelchair or ECV.
5. If Disney decided, on its own, to consider the Segway a medical device and allow its use in the parks it would then be unable to stop anybody from using a Segway in the parks, no matter the persons disability (or lack thereof) or level of experience.
6. Related to this one of the biggest problems in the park is small children running around. Many people walking around do not notice some of the small children, or even people in wheelchairs or ECVs because they are below their normal eye and scan level. I have had many times in the parks where I have come to a complete stop and people have walked directly into my ECV because they did not see me. Add the extra foot or so to the eye level of a person on a Segway and they are less likely to notice small children in their path.
7. And last, the Disney rental ECVs have a maximum speed of less than 3MPH, most private ECVs (including the off-site rentals) have a maximum speed lower than 5MPH. The maximum speed of a Segway is 12½ MPH.
8. The current use of Segways in WDW fall into two categories; one are people on a tour who are chaperoned and in areas where there are not many people at the time and the other are CMs who, by nature of their job, need to cover a wide range of territory. And the CMs are very well trained (over a week of training) in the use of Segways and are required to drive slowly.
Until such time (if ever) that the Segways are certified as medical devices I feel that Disney is acting responsibly in not permitting them for Guests (other than in controlled situations).