A driver in an HOV lane wants to leave it across a solid white line. What does the Arizona manual say about HOV lane entry and exit?

1. Drivers may never cross a solid white line for HOV lane entry or exit
2. Vehicles may cross a solid white line when merging into and out of the HOV lane, using signal and caution
3. Drivers may cross only double solid white lines to leave an HOV lane
4. HOV markings remove the need to signal