It is difficult to inform every visitor in these parks on what to do whenever they encounter wild elephants.
By keeping distance and watching the animals behaviour it is usually easy to avoid any trouble.
Though with more traffic around, you can get into dangerous situations.
One other thing, I think I have once seen a video about people feeding wild elephants on a road in Kaeng Krachan, and I think it was not the main area. Could actually be the Pa-la-u area. Does anyone know if this is common practise there?
Its on the public highway/road to Pa La Lu - its outside the park, I have been just twice (Pa La Lu was just too touristy for me) and had encounters with elephants both times on the road - including one charging my car. There are probably a host of unreported incidents which have not been fatal.