Crossword Puzzle Traffic situation

Clue: Traffic situation

Traffic situations (e.g. JAMS with 4 letters)
Stop-__ traffic (ANDGO with 5 letters)
Cause of a traffic delay (e.g. LANECLOSURE with 11 letters)
Common traffic-sign shape (ARROW with 5 letters)
Lowish varieties of "vertical deflection traffic calming devices" (SPEEDHUMPS with 10 letters)
Move quickly through traffic (DART with 4 letters)
Aid in traffic flow (TURNSIGNAL with 10 letters)
Show impatience in traffic (HONK with 4 letters)
Like some bad situations (LOSELOSE with 8 letters)
Some traffic monitors (NARCS with 5 letters)