Question about Intelli-Train

Hello out there,

I have a (hopefully!) simple question: Does anybody
have a sheet of instructions for the Intelli-Train?
I bought one at ebay and got several "smart bricks".
And now I wanna know, how the train reacts after
driving over these bricks. The most of its reactions
are clear to me, but sometimes - out on the railway -
the train starts sounding and blinking with the red
light - why?
If anybody could mail me the instructions-sheet,
I would be very happy!

Thanks - and have a nice Christmas and a Happy
New Year!

Christian