Anonymous on 7/13/2008 3:08:29 PM:
From the katy trail brochure available at trail heads
"All motorized equipment is prohibited except official and emergency vehicles. Electrically assisted pedal powered bicycles and tricycles (maximum speed 20mph) as well as electronically powered mobility devices for persons with disabilities such as motorized wheelchairs and scooters are allowed"
If you're disabled and your scooter is electric it sounds like you can ride it.