Answer: traffic

AnswerCrossword Clue
TRAFFIC

Drug dealings

TRAFFIC

Artery-clogger?

TRAFFIC

Buying and selling

TRAFFIC
A lot of cars and trucks
TRAFFIC
Cause of a highway delay
TRAFFICRush hour certainty
TRAFFICQuery, part 5
TRAFFICCustomer flow
TRAFFICRush-hour woe
TRAFFICIt puts the "ow" in "rush hour"
TRAFFICBig city problem.
TRAFFICUrban problem.
TRAFFICCity problem
TRAFFICKind of jam
TRAFFICCommuters, collectively
TRAFFICBarter
TRAFFICJam maker
TRAFFICThe way things go?
TRAFFICDriver's excuse for being late
TRAFFICBad thing to be stuck in
TRAFFICRush-hour certainty
TRAFFICRush-hour problem
TRAFFICUrban danger
TRAFFICKind of cop
TRAFFICCause of a tie-up
TRAFFICJam producer