I love my morning commute at 3:30 am. My ride is 18 miles in the morning. I get in at 4:45 for 5 am. It is so nice to have the entire road to yourself. Any traffic I do encounter has the entire road to move around you as well. I will say that 4:30 is a very different ride than 4:00 am. The peacefulness tends to evaporate the later in the morning it gets.