How many red tail lamps are required for any truck or bus?

For any truck or bus, the requirement is to have two red tail lamps. This regulation ensures that vehicles are adequately visible to other drivers, especially when they are slowing down or stopping. The two tail lamps provide redundancy and enhance visibility, which is particularly important for larger vehicles like trucks and buses that may have a greater length or may be carrying substantial loads.

Having two tail lamps also helps maintain compliance with safety standards, reducing the risk of accidents by making the vehicle more identifiable to those behind it. In addition, this requirement is consistent with regulations set forth by the Indiana Bureau of Motor Vehicles (BMV) and other road safety guidelines. This is why two red tail lamps are the correct answer for trucks and buses, as they play a crucial role in ensuring safety on the road.