How can you tell that a motorcyclist is preparing to turn?

A motorcyclist preparing to turn typically gives a clear indication of their intention by signaling, much like a car would. Signaling is essential for both safety and communication on the road, as it alerts other drivers to the biker's planned movements, helping to protect all road users. Motorcyclists often use hand signals or their turn signals to make their intentions clear, just as car drivers do, making option A the most reliable indicator that a motorcyclist is about to turn.

In contrast, weaving in and out of traffic, which some other options suggest, can be considered dangerous driving behavior and does not typically denote a clear intent to turn. Speeding up might imply the rider is trying to pass or overtake, and changing lanes abruptly is often perceived as a sign of reckless driving rather than a straightforward indication of a turn. Therefore, the signal used by motorcyclists aligns them closely with the signaling habits of cars, underscoring the importance of clear communication on the roadway.