For me there is not enough definition of the light trails. The red ones ok, but the white ones seem like they're part of the pavement

I like that star diffraction patterns caused by the small aperture you used toget a longer shutter speedhere. I wish the shot was wider though so that the swept curve of those red tailights wasn't cut off.

This is a good idea, but I'm not so keen on the placement of that bridge. I like the car lights and the small aperture has given those cool stars on the street lights, but there's something about the composition that's a bit dull. There's alot of road in the foreground, and the bridge is very central and doesn't quite look horizontal. There's some flare in the foreground too and it doesn't look pin sharp to me.

Well I expected to see car trails in this exercise, but this one is definitely unique.

It looks as if your lens was a little dirty, for night shooting it needs to be super clean or you'll get lens flare very easily. Otherwise a nice urban shot.