Are bus-only lanes on expressways active at all times unless posted otherwise?

Bus-only lanes on expressways are established to prioritize public transportation and improve traffic flow for buses. These lanes are typically active at all times, meaning that they are designated solely for the use of buses unless specific signage indicates otherwise. This ensures that buses can travel without the delays caused by the general traffic, thereby increasing their efficiency and reliability. The presence of explicit signage would be necessary to inform drivers of any deviations from this rule, such as times when the lanes may be shared with other vehicles or when they are closed altogether. In the absence of such signage, it is understood that the lanes remain bus-only at all times throughout the day.