The question is a true statement.
HOV lane (High Occupancy Vehicle) 2+ passengers must be in the vehicle while driving in said lanes.
A diamond lane on the freeway means it is a special lane on a highway or street that is reserved for a specific type of traffic (such as cars carrying more than one passenger). These lanes are also meant for the drivers who are not exiting any time soon.
High Occupancy Vehicle
It's an HOV - High Occupancy Vehicle - lane. Provided the lanes are open, they're available for use by any vehicle with two or more passengers.
On a freeway/highway, the lane which contains the diamond like shape is a separate travel lane. Specifically this lane is dedicated to the "ride share" and/or individuals carpooling.
It is illegal to leave it unattended.
shoulder
The same as it is for any other vehicle.
shoulder
Who is at fault when a vehicle is hit from behind on a freeway the driver in front for putting on there brakes and whatpenal code does it follow under?
24 HOURS
A carpool lane is a special freeway lane only for buses and/or carpools. You may use a carpool lane or onramp if your vehicle carries the minimum number of people required for the carpool lane or you drive a low-emission vehicle displaying a special DMV-issued decal. Motorcycle riders may use designated carpool lanes, unless otherwise posted. Signs at the onramp or along the freeway tell you the minimum number of people required for the carpool and the hours the carpool requirement applies. The pavement in this lane is marked with a diamond symbol (◊) and the words "Carpool Lane." These lanes are also known as high-occupancy vehicle (HOV) lanes. Do not cross over double parallel solid lines to enter or exit any carpool lane except at designated entry or exit places. Vehicles towing trailers are typically not allowed to use carpool lanes because they must drive more slowly and are usually restricted to the right-hand lane.