No flash was used, it is a 30s. pose at ISO 100 at the minimum aperture of F16 with the polarized filter on to take some light out .
I was training talking pictures of the street by night getting the trail of light of the cars and the star effect of the diaphragm blades when closed to a small aperture.
When I saw the train coming, I decided to take him, and then the magic of being at the right place at the right time happened. Somebody crossed the road in front of the train causing him to stop, so it arrived, stopped in front of the camera and left again. This procedure giving the trail of is lights, the clear faces and the blurry train for my delight.