i have almost perfect directional hearing; when in traffic i almost trust my hearing better then my vision (also because i am often overwhelmed by the lights around me, really at night).
i am able to judge direction, speed and distance to other traffic on sound alone, even when i'm in a car myself.
this doesn't apply to only traffic, but it is most noticable/useful in that situation.
aside from that, i am also (by training as a musician) able to select distinct sounds and amplify/weaken them so i can select a single sound to follow or ignore; this allow me to hear the difference between a bus that's preparing to pull up to the stop and a lorry that's just leaving the intersection a few yards away.
basically, you could say that i have the hearing of a blind person; i don't really need my eyes for a lot of situational awareness, and i indeed only use those if i need specifics