Every time you drive over a railroad crossing, you pass a little blue sign who's only role is to give you direct contact with the person(s) who may very well help save a life. These signs include a very specific phone number and "call number" to the exact railroad crossing where you are located. If there are any people, vehicles, etc., stalled on the tracks and are unable to move quickly, the operator on the other end of this phone number can quickly contact any trains moving on that track and get them to stop immediately. I can't express this enough, this number is exponentially quicker than dialing 911 or your local law enforcement agency. They are fairly small in comparison to normal road signs you may be use to, so keep an eye out!
