Hypothetically sunrise should be better with the colours and leading lines, the light trails might be nicer in evenings when it's busier though. There are times I would shoot opposite from sunrise/set direction to capture a different lighting or feel. Achieving same effect doesn't mean achieving same feel in a picture, rather how you want a shot to appeal to audience. But who knows, photography is many a times a journey of exploratory and experimentation for me, perhaps you can try it too and let us know?
