Large Scale Central

Electrical trip switches

Ok for a newbie and someone that knows jack crap about electrical here’s a question for ya

I have a railroad crossing sign (Battery op) that flashes and was wondering how, if possible, can it be wired so that the oncoming train trips it on and off??

any suggestions?

Simple. Go visit the Dallee website. http://www.dallee.com/
They sell all sorts of electro-mechnaical doo dads for just such purposes.