Related Clues:
- It involves designated drivers
- HOV lane arrangement
- Carpool lane, briefly
- Carpool-lane abbr.
- Ecofriendly way to work
- HOV group
- __ lane (carpoolers' convenience)
- Car-pool lane abbr.
- -- lane (carpooler's access, briefly)
- __ lane: carpooler's access
- HOV lane group
- ___ lane (commuters' aid)
- Auto-rotating system
- Carpooling car, initially
- ___ lane