In what circumstance should you use the overhead strobe light?

Using the overhead strobe light is primarily important for enhancing visibility under conditions where sight may be compromised, such as in low-light situations or adverse weather. The strobe light attracts attention from other drivers and pedestrians, making it crucial for safety when the bus is stopping or performing a function that requires increased awareness from those nearby.

In circumstances of limited visibility, such as fog, rain, or adverse conditions that hinder the driver's ability to see and be seen, activating the strobe light becomes vital. This practice not only signals the presence of the bus but also provides drivers in proximity a clear indication to exercise caution.

Other situations, like sunny weather, general traffic, or nighttime driving, do not necessitate the same emphasis on using overhead strobe lights, as visibility might be sufficient or different practices would typically apply. Therefore, the correct circumstance for activating the strobe light is specifically during periods of limited visibility, ensuring that safety remains a priority for both the bus driver and all road users.