Last weekend was starting to feel like fall, but morning today was a pleasant 72 F. Cut nearly 10 min. from my normal commute time by riding on a busy 6-lane street instead of my preferred route. The reasons: 1. Construction with heavy equipment like tractors blocking the quieter road on my usual route. 2. Rumors of cops ticketing cyclists not stopping at stop signs. I'm guilty of "Idaho-ing" stop signs, but I always stop if another vehicle got there first. Anyway, despite the traffic backup, I didn't have to filter or anything. Ok, I did switch to the sidewalk when the bus in my lane stopped, then switched back to the road.
The traffic backup was pretty bad - all the way to the airport. I passed several cars that never caught up with me before I reached the bridge to DC.