In DC you are either aggressive and demanding your slice of the pie
or you are in the herd and will be arriving later
Being a far right lane sheep means a lady on a cell phone will merge on top of you
The far left lane will be occupied by a nimrod going 55 in a 55 zone
The Batman surfs the pods & clumps and plans exits, merges and overtaking maneuvers a mile out.
There is a often a clean path thru most of the major intersections
and an experienced DC driver know when windows open and shut.
The Northern Virginia HOV shutdown is a real pain for deliveries.
If you follow the herd into one of the choke points you will exit with the herd.
The aggressive driver runs up the side lane and knows a spot will appear to duck into.
If you are under a schedule to get to an appointment after leaving your last appointment late,
you know when to leave a congesting highway and run the surface lights to make progress.
You really need to be alert and in control to be aggressive in DC traffic.
Most nights I did not have the energy and I would accept the flow.