Transport systems that begin each of the three theme answers

Question:

Answer:

SUBWAYS

Length:

Similar Crossword Questions:

Number of times this puzzle's theme word appears diagonally in the grid (to complete the puzzle, shade those words plus the Down answers that begin where they meet)
Rhyme runaway, and how this puzzle's theme answers are formed?
Upright, and what's been removed to form this puzzle's theme answers
What one must have to solve this puzzle's theme answers
Term for each of the 15 asterisked theme answers in this puzzle
Title of a crossword with theme answers like OVERHAND KNOT, BUTTERFLY EFFECT, and CRAWL SPACE
Out of whack, or what's featured in each of this puzzle's theme answers
Where everything from the theme answers collects
Postseason gridiron game, and a hint to the puzzle theme found in starred answers
Shade from the sun that's inserted in this puzzle's theme answers
"Dog the Bounty Hunter" network, and a hint to the theme in this puzzle's four longest answers
"Something you would cheat on if you knew you wouldn't get caught." "___" (also, the source of this puzzle's theme answers)
Reservoir, and hint to puzzle theme found in seven long answers
Tip, and a hint to this puzzle's theme found in five answers
Letters for the names "buried" in this puzzle's theme answers
Agent "embedded" in this puzzle's theme answers
What this puzzle's theme answers start with
What the theme answers can do
Any of five that begin this puzzle's longest answers
Big, and word that is found in all three theme answers
Common easy crossword theme answers
This puzzle's theme found in the answers to five asterisked clues
Compound found in perfume and this puzzle's theme answers
The pairs of letters inserted into each of this puzzle's theme answers, for example
Classic rap outfit whose more famous members are circled in this puzzle's theme answers