What is the minimum number of emergency roadside reflectors required on every school bus?

The minimum number of emergency roadside reflectors required on every school bus is three. This requirement is in place to enhance safety and ensure that, in the event of a breakdown or emergency, the bus can be adequately marked to alert other drivers on the road. The use of three reflectors provides improved visibility from multiple angles, helping to prevent accidents by making the stationary bus more conspicuous to passing vehicles. This is particularly important for school buses, as they are transporting children and need to ensure maximum safety in any situation. The regulations set forth are designed to meet safety standards to protect both the passengers on the bus and other road users. The other options do not meet the set safety standard, as having only one or two reflectors would not provide sufficient visibility to adequately alert other drivers in various situations.