During what scenario is a left turn particularly dangerous for motorcyclists?

A left turn can be particularly dangerous for motorcyclists when visibility is reduced because a lack of clear sight encompasses several risk factors. In conditions where visibility is compromised—such as during rain, fog, or at night—drivers of other vehicles may struggle to see approaching motorcycles, which are smaller and less conspicuous than cars. This can lead to situations where a driver may not notice a motorcycle is making a left turn or is approaching an intersection.

The risk is exacerbated because turning left often involves crossing oncoming traffic, where the motorcyclist is more vulnerable to being overlooked or misjudged in terms of speed and distance by other drivers. Reduced visibility can affect reaction times and the ability of all road users to gauge each other's positions accurately, significantly increasing the chance of a dangerous encounter.