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What does a vehicle with a green flashing beacon indicate?

  1. Emergency service vehicles

  2. Doctor on call

  3. Road maintenance vehicle

  4. Ambulance in transit

The correct answer is: Doctor on call

A vehicle displaying a green flashing beacon indicates that it is a doctor on call. This signaling system is designated specifically for medical professionals responding to emergencies. When a doctor is called out to provide urgent medical assistance, the green beacon alerts other road users to give way, ensuring that the doctor can reach their destination as quickly as possible. In the context of the other options, emergency service vehicles typically use blue lights, which are associated with police, fire, and ambulance services. Road maintenance vehicles may use amber lights to signal their presence and the need for caution due to potential hazards on the road. While ambulances in transit may also have flashing lights, they would be equipped with blue lights rather than green. Understanding these distinctions helps in recognizing the specific role and urgency associated with different beacon colors on the road.