When are four-way flashers allowed to be used?

Four-way flashers, or hazard lights, are used to alert other drivers to potential hazards. The correct situation for their use is during a breakdown, as these lights signal to others that the vehicle is not functioning properly and poses a potential danger. It's essential for other drivers to be aware of a non-moving vehicle, especially on busy roads, to prevent accidents.

In contrast, using four-way flashers while backing a bus isn't ideal because it can lead to confusion for other road users. Indicating a traffic stop should typically be done using turn signals or by following specific signaling requirements, not flashers. Additionally, while parking might involve using flashers in certain contexts, it is generally not the primary purpose of four-way flashers.