A traffic bitch is easy to spot as they maintain at least 25 to 100 yards distance away from the vehicle in front of them causing a wide gap in traffic letting anyone and everyone pull in front of them from nearby lanes.
As vehicles cut them off, they further slow down to again maintain a distance from the vehicle in front of them, which in turn further slows the lane of traffic, and sometimes stops traffic in their lane entirely. A traffic bitch is the cause of a great many rear-enders and pile-ups simply due to their existence.
A traffic bitch can either be male or female, is not necessarily talking on a cell phone, or smoking a cigarette, or checking their makeup in their rear view mirror, but usually seems to find their way in front of you especially if they see that you are driving aggressively. A traffic bitch does not necessarily only appear in heavy traffic, but are usually the cause of traffic if they pull out in front of smooth moving traffic and drive at least 10 miles slower than the speed limit.
A traffic bitch is by definition a bitch in traffic.
"On the way home a traffic bitch cut me off in the far left-hand lane and allowed all the cars and trucks - that I had just passed - in front of him (and me) causing me another 30 minutes of traffic time so I was late to dinner; no amount of cursing or screaming or tailgating made the traffic bitch move any faster."