Generally when I ride into work the roads are fairly quiet, and then busy on the way home.
Overall I would say they are more stupid on the way home, but this is probably due to the increased number of vehicles on the road.
In the morning the biggest problems tend to be delivery drivers at speed in built up areas and cars with windscreens not properly cleared.
In the evenings it tends to be the usual with cars going all over the place, diving down side roads, pulling out in front of you, racing to lights etc….
All of it compounded by the fact people seem to think they can park their cars anywhere these days and get away with it, even on double yellows…..