If a slow-moving vehicle is in the left lane, should you flash your high beams to let them know you intend to pass?

Flashing your high beams can be an indication to slow-moving vehicles that you intend to pass. However, it is important to consider the context and safety when doing so. In general, it is advisable not to use high beams in this situation because it may startle the driver of the slow-moving vehicle, potentially leading to unsafe reactions.

In certain conditions, such as low light or in a rural area, flashing high beams can be construed as an aggressive action rather than a friendly signal. Moreover, the slow-moving vehicle may not be aware of your presence or your intentions, leading to confusion rather than effective communication. Therefore, it is better to wait for a safe opportunity to pass without using high beams, ensuring that passing maneuvers are deliberate and safe. Using headlights to communicate in this way is not a standard driving practice and can cause more issues than it resolves, reinforcing that it is best to refrain from flashing high beams in this context.