Tranzwatching in NewYork, New York, USA
A recent edition of The New York Times carries an interesting article on the fascination for public transport being particularly common amongst those with autistic conditions.
Says the article; "The link between trains and autism is well documented. Autism refers to a spectrum of disorders that typically includes impairment in social interaction and sometimes includes stereotyped interests, like trains. People with autism have difficulty processing and making sense of the world, so they are drawn to predictable patterns, which, of course, trains run by".
Care workers and local transit museum employeees are using this interest to help autistic children develop abilities and greater comfort with social skills.