Lanes marked on both sides by double-broken yellow lines are known as:

Lanes marked on both sides by double-broken yellow lines are referred to as reversible lanes. These lanes allow traffic to flow in both directions, but the direction of traffic can change depending on the time of day or current traffic conditions. This flexibility helps manage traffic more efficiently, particularly during rush hours when one direction may have a higher volume of vehicles than the other.

The purpose of reversible lanes is to optimize traffic flow by allowing for a lane to be used in one direction when necessary. This can alleviate congestion and enhance travel times for motorists. The indication of double-broken yellow lines signifies that drivers must exercise caution and be aware that they are entering a lane that may not always flow in the same direction.

In contrast, one-way lanes are designated for traffic to flow only in one direction, while HOV (High Occupancy Vehicle) lanes are reserved for vehicles with multiple passengers to promote carpooling. Closed lanes, on the other hand, are typically marked with additional signs or barriers to indicate that they are not to be used for travel.