What does it mean if a lane is marked with diagonal stripes?

When a lane is marked with diagonal stripes, it indicates that the lane is closed to traffic. This marking serves as a visual warning to drivers that they should not enter or use this area, often because it might be reserved for safety purposes, lane changes, or other specific conditions where vehicle access is restricted. The diagonal stripes are intended to promote road safety by clearly defining areas that must be kept clear of vehicles to avoid accidents or obstructions.

In contrast, options such as stating the lane is open for all traffic, designated for high-occupancy vehicles, or allows for temporary parking do not align with the meaning of diagonal stripes. Such markings are specifically used to indicate that a lane should not be used by any vehicles, thereby enhancing the awareness and ensuring compliance with traffic regulations for the benefit of all road users.