adjective. Going toward the south.

adverb. Toward the south.

adjective. Which is (or will be) travelling south.

adjective. moving toward the south

"WABC CORRESPONDENT: shot on what we're looking at here with the building, but I can tell you that out the window, I'm looking at the FDR Drive southbound which is going to pick up a lot of the alternate traffic from midtown and that's already at a standstill."

south  

eastbound  northbound  southward  westbound  

crosstown  eastbound  ground-to-space  high-occupancy  interisland