I leave for work around 7:00 every morning, and get in by 8:00. I leave at 4:00-ish (unless I'm working late - never early). Usually I bike or take the bus, depending on weather. Very rarely I drive.

The thing is - no matter what my method of transportation, traffic/crowding/bike paths are always free and clear in the morning on my way in. So I'm thinking not too many people start work at or before 8:00 here. However, at 4:00 in the afternoon, the roads, buses and bike paths are jam-packed.

So my question is - if people are getting to work at 9:00 or after, what the heck are they doing blocking traffic at 4:00 for those of us who actually put in an 8-hour day and want to go home because, well, we're tired after putting in a full day's work?