I will check the leds, not easy task because I enclosed the phidget circuit in a box, with all the buttons outside.
So what you are saying is, I check lights (I didn't remember that the phidget circuit had any) in the phidget board when the car passes under the bridge... I will do and will let you know.
Like aditional data, I should say that all the other things works without delay, like Pause, Restart, start, etc.
Thank you.