Two of the photo's were on a live track. I was there when a train did go by and with the distance between the shoot area and were you could see it, there was plenty of time to get off the track. I am not reckless...nor but anyone into danger. Defendly never encourage anyone to shoot children on a live track. Also, I had someone with me to watch for trains. In my area no fast moving trains, and you can hear a train coming in the country with no city noise from a long distance away. The rest were taken at a park which is part of their enouragement for children to learn about trains. We have a lot of old Depots here that towns have sectioned off and open to the public for use. No fences around it.
I do understand your concerns, but these pics were posted to stimulate creativity not to encourage shooting children on a live track. Don't know where you are from, but were I live our park systems are relaxed, and look on line there are 1,000's of photo's taken on rail road tracks, the Rail Road can get in line to sue me. There are some idiots out there that do not respect the speed of a trail, but I am not, since I have spent my life crossing railroad tracks with only a stop sign. Now that is something you really need to worry about. How many people are killed in small towns from people not stopping at the stop signs and trying to bet a train that is in close distance. More railroad light systems are needed vs. how many people taken photos on a rail road track.