Answer: carpools

AnswerCrossword Clue
CARPOOLS

Commuters' cost savers

CARPOOLS

Transportation-sharing arrangements

CARPOOLS

Arrangements for driving to work.

CARPOOLS
HOV lane users
CARPOOLS
Uses the HOV lanes, perhaps
CARPOOLSSystems of rotating wheels?
CARPOOLSCommute options
CARPOOLSCommuters' cost-savers