What is a common method for informing drivers about work zones?

Answer: B — Digital variable message signs

Using digital variable message signs is an effective and common method for informing drivers about work zones. These signs can display real-time information and updates, such as construction schedules, lane closures, and detour instructions. The ability to change the message quickly makes them particularly useful for adapting to ongoing conditions, ensuring drivers receive relevant information that can help them navigate through or around work zones safely. In contrast, while bright colors can enhance visibility, they do not convey specific information about work zones. Verbal announcements are limited in scope and may not reach all drivers effectively, especially in fast-moving traffic. Social media updates can be beneficial for broader awareness but do not provide immediate or direct information to drivers as they approach a work zone. Therefore, digital variable message signs stand out as the most reliable and direct method for communicating essential information to drivers in real-time.